How strong is a zip-tie? Could one hold the end of a bunk board carrying a 2,200# sailboat for 250 miles at highway speeds, including over a mountain pass? Would you do it with your boat? How about two, one on each end with a rusted bolt in the middle of the bunk?

Pretty strong as it turns out. The picture below shows the aft end of the starboard bunk just as the previous owner had tied it before I purchased Summer Dance and towed her home. The other end was like it. They held the whole way. Notice that there is no bolt holding the bunk to the bracket. Don’t try this at home, kids. 

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