Support structures are very important under boat shrink wrap when the intended purpose is for boat storage (as opposed to transport).

Dr. Shrink’s shrink wrap video will guide you step-by-step in the construction of a woven cord strapping and wooden upright support system (simply using your 2 x 4's with Dr. Shrink's Top Support Caps, Bottom Support Caps and banding / cord strapping).
 
This simple and highly effective support system gives your shrink wrap cover enough slope and strength so that snow and rain will run off.

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