I have a Procraft 200 combo F/S. When I am launching, the bow wants to drop down under the winch. You would literaly need to completly submerge the trailer to prevent this from happening. I have mounted side bunks on the trailer that enables me to put the trailer deeper thus preventing the boat from drifting off the side, but I still have issues with this. My last step was mounting a keel roller away fron the bow mount roller that allows the transition and will hopefully prevent this from occuring. I saw an older Stratos that had a spring loaded bow roller that would piviot down as the boat was launched but cannot find one anywhere.