I've ran pretty much all the mounts. Broke all of them, or they became corroded and separated. By far the best option is the "couch" mount. Or the mount from a larger sit down yamaha jet ski. They are taller. So they require either the bed plate holes being enlarged. The mount holes themselves being enlarged. Or the bottom of the mount being milled down.
People might say they stretch too much. Or vibrate too much. I nosed my ski into prob 2 feet of water straight into sand. From a ways up. Coupler held just fine. So take it all with a grain of salt.