Hi Andy

No

I have owned 3 (the original a surprise gift and since replaced on warranty twice) and would not get one for watersports again. Although a waterproof connection attaches to back and I was meticulous in checking and taping it some water can breach. Then the camera stops. This has happened snorkelling and SUSing. It appears immersion may be the issue. The surfboard mount attachment is very bulky not flat like GoPro when not in use. In the snow the cam also stopped after a few minutes and eventually I found in the fine print very cold no good for battery. Thus i would keep it inside my jacket pocket warming against my chest until off the lift and then click on.

On the plus the non board mounts are good. The picture is excellent and fogging not an issue.

Once you get a cam it is addictive for months. My wife thought I was becoming narcissistic so I haven't SUS filmed for a while but here is some ION Winter footage

Have got both go pro and the ion find the Ion so much easier to use also think it puts out clearer footage but if you listen to the go pro marketing bus that's not the case . For me Ion just the go but I will check out that back plate to make sure it seals well . If you watch the king of the cut vid done by Matty he use some footage from both my cameras Go pro. On the board and the Ion on the head cam .

Cheers jas will do, I know plenty with gopro's very mixed msgs good n bad for SUP,
Haven't heard much about the Ion

Stimo epic video awesome footage from both cameras!! Makes decision harder hahahaha