I've had a GoPro on my ski tip for a long time. I heated a regular flat mount before applying it to a clean ski, and the mount has never budged. I've broken four buckles (the "neck" between the mount and the camera case), donating one camera to the carp before getting the orange floaty backdoor and a tether for the next camera, but the regular flat mount's adhesive has proven strong enough to make the surf mount unnecessarily.
I also use a second flat mount with a small hole drilled in its side to run the tether through. It has kept the camera with the ski after buckle failures, but the camera can beat itself, and your ski, to death until you stop, so stop immediately (not good for tournaments). The GoPro tethers are really strong, and I've never had one break.
The wake at 22 off is too much for the buckles, but you can ski 28 off and shorter for months between buckle failures. It changes the balance of your ski a bit, but I got used to that in a set. Set the camera for 960-30 resolution so you can see from your head to where the water is breaking on your ski. It's just about the best, most consistent, visual feedback you can get on your skiing.