Hi,
I do not own a Nicholson 38 but, in my collection of pictures, I remembered I saw an interesting solution to that problem. In fact, I believe it solves 3 problems: The right weight positioning, the tangling of the sheets and the exposure of the motor to external agression. I saw it on “Lady Anwyn”. The solution is to instal a motor bracket at the foot of the mizzen mast. The only pictures I have of that solution are included herebelow (they were not intended to show that solution in particular, naturally). I hope they are sufficiently self-explanatory.
My excuses for any mistake in english, I am french from mother tongue.