Originally Posted by nautracer
.smaller if at all possible.and use bolts and huge washers.
Are we talking about the same position as the ETI one? It would be difficult to use washers and bolts because there's no easy access to the rear. ETI uses rivets for theirs. They'd work but instead of one rivet only over the other I'd want a baseplate with, say, 4 rivets about in a 2" square pattern to resist side-to-side motion.