Now you've gone down the CMC route, I hope you specified the S/S motor rails or you probably won't make it back from the Channel Islands if it's at all lumpy.
The weakest point tends to be the fixings in the side working loose or snapping, although the ram mount is a weak area. I've always replaced the side (slider) bolts with longer ones to enable me to fit a large heavy washer and a nut wire locked in place, don't like the way they rely on a bolt fixing tapped into the bracket.
Most of the people who use them in the States are running very high performance but quite small craft, nearly always on a lake or river, but rarely in offshore conditions. Bass boats as shown being a typical application. The manual plate is quite often used to establish the optimum engine height, and then it's either welded together, or replaced with a custom box!
And don't come blubbing back to the forum when your motor falls off, coz it will.
Might be a good idea to invest in good quality shift and throttle cables, as I've seen numerous motors hanging from them after the lifter failed, don't go buying no cheap ones!!!!!!!