The guide ons have a three foot long piece of 2x2 steel tubing that the pvc slides over. I have mine set tight to the boat. When i load, my pvc flexes out around the bow where its wider then is a half inch away from the hull when winched all the way on. When winching on and using guide ons your are creating a triangle effect. the transom cannot move side to side and the bow with the winch is held on course. Also check out the 12" wide keel rollers that are self centering. They have spiral grooves that line the boat up as it goes on. One just past midways may be the ticket to what you need, along with the guide ons.
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1983 V-20 capsized. . . . in the garage.
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