Skier's Choice Supra Instruction Manual page 80

Optional Boat Buddy
This feature makes loading your boat on the trailer much
easier.
Loading
Place the trigger in the "SET" position. When the bow eye
contacts the Boat Buddy, the pin will latch, securing the
boat.
Unloading
To unload the boat, pull back on the trigger and locate it in
the "SAFETY" position.
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Surge Brakes Fluid Reservoir
To check brake fluid, twist black cap and remove. Pry rubber
plug out of reservoir. Follow instructions printed on plug. Use
DOT 3 Brake Fluid.
Vault Bearings
Your trailer features Vault bearings. See trailer owner's manual
for more information.
© 2009 Skier's Choice, Inc.