I have an 8616 on a double stack Beatdown mount. Helix 10 on top and the 8616 on bottom. I know eventualy the weight of the 8616 is going to strip the plastic teeth on the mount with the stupid waves from all the wake boats on my home lake. I try and be easy but it's just a matter of time. I've seen a post of somebody that makes a bracket for some of the units but haven't seen anything for the 8616. Also this can't be a permanent seal as I swap the head unit between 2 boats. Any ideas? Scott