I just got a trailer for my 14ft Indian River fiberglass canoe with a square stern. I have been running an old Johnson outboard on it that weighs about 55 lbs. It sits on it fine in the water- no problems. If I transport it on a trailer with it attached in place on the stern will moderate road bouncing cause the stern to crack or give way under the weight of the motor? I really would like to avoid having to move it if I can.