I will be out of town for a while, but when I try it I will let you know if/how it works.
I found the post on this forum.
Nugent, the engine should be offset slightly to the Starboard by 1" per 100 hp so 1.35 max for you to counter the touque from the single prop which will tend to make the boat run on one side if the engine is central and the LWL short in comparison to the beam and draft. On a long LWL you can get away with a centre position. We recently moved my offset engine back onto the centre line (Ribtec 6.5m) and the handling is better.
I will also try a bungee and look into a damping system.
thanks you for all the help.