Me and dad about 20yrs ago took our brand new bass boat out after thinking it was a good idea to put some protectant on the carpeted trailer bunks. Trying to back down the ramp, boat slid off the trailer. Carpet bunks were slicker than snot from the protectant we used. Luckily boat was about half way in water when it slid and we were able to push into water before retrailering. Had only minor damage to the very bottom edge of hull and the bottom tip of motor. Got lucky on damage in a true idot momment.