yeah, mine did the exact same thing. I eliminated it by making sure the winch got the bow solidly into the bow support, then ratched it both down and to the front with some good solid ratchet straps. Unfortunatley the damage to my stripes had been done, but I'm going to change the graphics at some point anyway and you have to be right on top of the boat to really notice it. Mines an 89 311 SR-1 Formula, so it's not perfect anyway, but it still pissed me off.
Once the stripes are redone, I am going to mount some terry cloth inside the bow "chock".