I've launched a Mastercraft ProStar 205 (weighing about 4500lbs w/trailer) and two PWC's (about 1000lbs each). The main issue is if they launch ramp is steep enough to get the boat on/off the trailer without having to back the car into the water. In my case, the rear wheels of the car are about 12" from the water, to maybe even with the water. This way, the car doesn't have to get wet.