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Trailex Universal  Bunk Style    Boat Launching  Dolly
    Adjusts to Fit Virtually all Boats

Universal Adjustable Dolly for Sailboats Such as Sunfish, Laser, Optimist,  Snark,  Zuma, Force 5 and Similar Sailboats.  Also for Small Boats, Jon Boats, Zodiac Style Inflatables, Canoes, Kayaks & Rowing Shells.


*within the 48 USA


Trailex Logo

Trailex Ultra-Light Aluminum Dollies come with  a One Year Limited Warranty.  Almost 50% lighter than steel  dollies and they Never Rust



Universal Dolly Model Quickly Adjusts to fit Different Boats From 7'-0" to 24-0"' in length


Trailex Universal Launching  Dolly with Sunfish sailboat

Universal Dolly with Standard Tires shown with 13'-10" Long Sunfish Sailboat 
(boat not included)


SUT-300-U  Standard is 695.00 + FREE Shipping (48 USA)

See Alternate Dolly - CLICK HERE

Scroll Down the Page  for Details , Available Options Pricing  and Action Videos




Trailex Model SUT-300-U  Universal Dolly is designed to transport small sailboats, boats, canoes or kayaks in a variety of lengths and up to 300lbs.  All Aluminum with Padded  rear adjustable supports and front padded bunks.  One Dolly Does It All !  Use the same dolly to move an Optimist Sailboat, a 24' Canoe, a Sunfish Sailboat, a Vanguard V15 Sail Boat, or even a Zodiac Style Inflatable (add the  Option Kit for Inflatables).  Easily Adjust the Dolly to any of your Boats.







15 x 6.0   PNEUMATIC

Boats to 14'
Canoes to 24'
Inflatables to 15'
Kayaks to 24'
Sailboats to 17'

+8'-6" to 13'-0"'

Boats from 7'-0"
to 24'-0"


51  LBS

300 LBS

18 x 8.5
56"* 60 LBS

Note:  Rim Colors May Vary From Color Depicted

*Adding the Kit For Inflatable Boats  Increases Width of  Dolly as Follows:
Standard  Wheels  with IFB-1 Kit is 68" Wide
Super Size  Wheels with IFB-1 Kit is 70" Wide

See the Model Detail Page for other Configuration Widths




Trailex Universal Dolly with Super Size Wheels - Middlepath Skua
Trailex Universal Launching Dolly with Optional Super Size Wheels Shown 
with Middlepath Skua 



Universal Beach Launching Dolly

  • Heavy Duty Aluminum Construction

  • Adjustable Rear  Supports

  • Large 15" x 6" Pneumatic Tires

  • Optional Super Size Wheels

  • Adjustable Tongue Length

  • Heavy Duty Front Bunk Support

  • Fits Flat , Semi-Vee Boats  & Inflatables- Plus Canoes & Kayaks

  • Quickly Adjusts from One Boat to Another



One Dolly

Sailboat on Trailex Universal Dolly 12' Swift Kayak on Trailex Universal Dolly
Sailboat Dolly Kayak Dolly

Does It All 

Canoe on Trailex Universal Dolly     Jon boat on Trailex Universal Dolly     Inflatable Boat on Trailex Universal Dolly
Canoe Dolly Fishing Boat Dolly Inflatable Boat Dolly

Same Dolly - So Many Boats 





SUT-300-U Universal Dolly Retracted and Expanded
Trailex SUT-300-U Dolly Quickly Retracts Or Extends With A Twist Of A Knob - Details


The Trailex Model SUT-300-U Universal dolly is perfect for transporting or storing your  Snark, Sunfish, Laser,  Zuma, Force 5 , Opti and Similar Sailboats. Also fits small boats, jon boats, canoes and kayaks.  Also fits most Zodiac Style Inflatables with the Rear Transom Support Option.  Rear Supports can be adjusted to fit hulls from semi-vee to flat. Two section Tongue can adjust  in length  to Allow different Balance  positions under Boat.  Wrap Bow Line from Boat around Handle as you would Tie a Rope to a Cleat to secure front of Boat to Dolly. 



SUT-300-U Dolly with Option for Inflatable Boats

Zodiac Inflatable Boat on Trailex Launching Dolly     Zodiac Inflatable Boat on Trailex Launching Dolly
Front Bow Stop is Adjustable    Pads Adjust to Support Tubes
Zodiac Inflatable Boat on Trailex Launching Dolly     Zodiac Inflatable Boat on Trailex Launching Dolly
Hull is Supported at Multiple Points    Rear Transom Support for Motor




   Standard Tires are 15" X 6"


Super Size Tires are 18" X 8.5"


Tread pattern and rim colors may vary from depiction



Trailex SUT-300-U Dolly with Super Size Tires - Shown with Standard Tire as a Comparison





Trailex Universal Launching Dolly - Rear Cradle       Trailex Universal Launching Dolly - Inflatable Boat Option Installed
Standard Rear Supports adjust to any Boat Hull - From Flat to Contoured Inflatable Boat Kit Option Supports Zodiac Style Boats at Transom and Both Tubes




Trailex Universal Launching Dolly Cradle Bunk Details      Trailex Universal Launching Dolly - Bow Stop
Padded Rear Supports Adjust to any Angle and Width along Axle.   Fits Virtually all Boat Hulls  Bow Stop adjusts to any Position on Handle.  Fits all Boat Bow Styles




SUT-300-U Front Bow Support Detail


Universal Dolly Tongue Adjustment

The Wide Front Bunks Fit Boats 
From Flat Bottoms to Semi-Vees

Quick Adjustment Knobs Let  you
 Change Tongue Length Easily

The Front Bow Support can be positioned anywhere Along the Rear Tongue Section Length.



HA-1 Hitch Adapter for Towing; For SUT-300-U Dolly

HA-1 Hitch Adapter 

  • 1-7/8" Hitch Coupler 

  • Low speed and short distance towing only

  • Hitch Option for your Dolly allows towing with an ATV, 
    Golf Cart or a Vehicle

  • Off-Road use only




Nose Wheel Option for Trailex Dolly     Nose Wheel Option for Trailex Dolly
NW-2  Nose Wheel Option   Typical  Position on Dolly 





Trailew Web strap Clip Option
FWSC Option

Trailew Web strap Clip Option Set of Four Clips

Optional Tie Down points for Web Straps or Bungee Cords - Use to  add extra tie down points  to secure boat. Easily adjusts to any position by sliding.


FWSC Option includes Four Sliding Square Eyebolts.  These can be installed on any side of a  member on the unit  that has a slot and then locked in place by tightening the nuts.  






Model SUT-300-U
Standard Wheels


+ FREE Shipping (48 USA)

Model SUT-300-U
Super Size Wheel Option

Out of Stock 

+ FREE Shipping (48 USA)



IFB-1  Option Kit
 for Inflatable Boats

$ 195.00

+ FREE Shipping (48 USA)
HA-1  Hitch  Adapter
 for Towing -1-7/8"

$ 199.00

+ FREE Shipping (48 USA)


NW-2 Nose Wheel Option

$ 379.00

+ FREE Shipping (48 USA)
Set of 4 Web Strap Clips

  $ 29.00




(Rigid Inflatable Boat) do not require the IFB-1 Kit.  RIB hulls can use the Standard Dolly


When should you consider the Super Size Wheel Option?  If sand is so soft, that your foot sinks in it to your ankle height, then the Super Size Wheel  would be appropriate.  Or if you have a heavier boat, which would need more support on moderate sandy beaches.

Remember - Utilizing the Super Size Wheel Option increases the dolly's floatation when in the water.  When using  the Super Size Wheels, step on the centerline tube to submerge dolly when retrieving boat.



Wide Boats - Over 60" , including some Sailboats, SemiVee and others.

While the standard dolly will work on wider boats, it is suggested that you consider adding the  IFB-1  Option Kit .    Although designed for Inflatable Boats, it also provides a wider profile for larger boats and an extra rear support bunk.





  • Canoes up to 24'
  • Kayaks up to 24'
  • Dories up to 20'
  • Skiffs up to 20'
  • Wherries up to 20'
  • Fishing Boats up to14'
  • SemiVee Boats up to 14'
  • Jon Boats up to14'
  • Inflatable Boats up to15'
  • RIB up to 14'
  • Sailboats up to 17'
  • Rowing Shells up to 24'

Within Dolly Weight Capacity


Fits These Popular Models 
and More

29er Sailboat   JY 15 Sailboat #
420 Sailboat   Kayaks up to 24'
470 Sailboat   Laser Sailboats
AB Inflatable Boats*   Lido Sailboats #
Achilles Inflatable Boats*   Little River Boats
Albacore Sailboat   Livingston Boats
Alden Boats   Maxxon Inflatable Boats*
Adirondack Guide Boats   Megabyte Sailboat
American Sail Sailboats   Mercury Inflatable Boats*
Avon Inflatable Boats*   Melges  Scow 17  #
Bauer Sailboats   Melonseed Sailboat
Boston Whaler Boats   Minifish Sailboat
Butterfly Sailboat   Mirror Sailboat
Byte Sailboat   MX Ray Sailboat
Canoes up to 24'   Novurania Inflatable Boats*
Capri Sailboats   Optimist Sailboat (Opti)
Caribe Inflatable Boats   Peapod Sailboat
Chesapeake Light Craft Boats   Phantom Sailboat
CL 14 Sailboat   Pico Sailboat
DeWitt Sailboat   PortaBote Boats
Dolphin Sailboat   Precision 16
Dyer Sailboats   Puffer Sailboat
El Toro Sailboat   Rowing Shells to 24'
Escape Sailboats   Sabot Sailboat
Finn Sailboats   Sea Eagle Inflatable Boats*
Fireball Sailboat   Shellback Dinghy
Flying Junior Sailboat  FJ   Snark Sailboats
Force 5 Sailboat   Snipe Sailboat #
FSI Inflatable Boats*   Sunfish Sailboat
Fusion 15 Sailboat   Swift Solo Sailboat #
Genesis RIB (Walker Bay)   Trinka Sailboats
Gig Harbor Boats   Vanguard 15 Sailboat #
Hobie Kayaks    Virus Boats
Holder Sailboats   Walker Bay Boats
Hunter Sailboats   Wayfarer Sailboat #
Inflatable Boats to 15'*   Whitehall Boats
International  14 Sailboat   Zodiac Inflatable Boats*
    Zuma Sailboat
* requires Option Kit for Inflatable Boats   # Suggested IFB-1 Option  for Wide Boats



Trailex T-bolt

Trailex T-Bolt with nut

  • Patented T-Bolt Construction

  • Fully Adjustable

  • Heads of bolts slide to any position.

  • Requires only one wrench to tighten

  • Lock nuts on all bolts 

  • Strong & lightweight

Trailex Extrusion & T-Bolt





See Action Videos
Trailex Dolly Owners  love to post Videos.  See the Latest Action Videos




Trailex SUT-300-U Dolly Video
Hobie Adventure Island Trimaran Shown



Find Your Boat's Dolly Model 
Click Here 






Trailex Universal SUT-350-SD Sling Dolly
Sling  Style Universal  
Beach Launching Dolly

See Our Universal Sling  Style  Dolly for Many  Boats Under 350 lbs.

Sailboats, Canoes, 
Kayaks, Jon Boats 
and Smaller Inflatables


Super Duty 
Beach Launching Dolly

See Our Super Duty Launching Dolly
For Larger Boats Up to  700 lbs Capacity

Sailboats, SemiVee Boats, Jon Boats and Larger Inflatables






SUT-300-U Dolly
Assembly Instructions



Escape Sailboat Trailer Zuma Sailboat Trailer





 Castlecraft is a BBB Accredited Boat Dealer in Braidwood, IL