I also used the Northern Tool roller option for my trailer and 12' raft. Holy crap, what a difference! I spaced out 3 rollers evenly and the total cost was about $70 for 3 rollers and hardware, bolts, washers and lock nuts. I googled norther tool coupon for the updated codes - worked great. Note: previous posts stated the the rollers were spring loaded which would make removal a snap. Mine were not spring loaded. I drilled small holes at each end and using a cotter pin to secure and to remove easily when. It in use. I plan on testing in real world in 2 days.
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