I need to go to a transom saver to trailer my boat due to lack of ground clearence. Looked at them today and they all said for "trim & tilt motor only". They all rested on the roller, while the top is tied off to the motor I can see if bumped the bottom could bounce off the roller. I this why they say trim and tilt motors only since they have restricted bounce? If the bottom was secured to the roller then I think they should work. Trailering with just the tilt lock on makes me nervous. I am thinking of adjusting the transom saver to provide ground clearence needed be it short of the full tilt position. Am I on the right track?