We were circling our Freedom 21 in round Lake waiting for the bridge to open when a nother boat turned in our path so I put our Honda 5hp 4 stroke in reverse. Bang, the motor was gone. Thank goodness we had a cable securing the motor to the boat and thank goodness we were prepared and had the sail cover off and the halyard rigged. Our black synthetic motor mount board had a defect--a crack-- which caused it to fail. Fulton sent us a new "board" even though this particular motor mount was made in Canada by the firm Fulton eventually bought out. By the way, if you have enough motor oil , you can get a 4 stroke going in less than an hour, on the water, but that''s another story. If you have the black synthetic board I would remove it and inspect it for any defects, and I would secure the motor to the boat. I realize this doesn''t fully answer your question but hope it helps some.