My GoPro rides atop my camera. I just turn it on and let it roll. I have not used it much on a stick. Proably a good thing.
This thing about not removing the regulator and mask until back on the boat, please, stop. So, like on the surface, you need assistance from your buddy, maybe to hold your GoPro while you deal with an issue, or just to communicate something of importance (or not) and I have waited a looooooooonnnnnggggggggg time often for a pick up. You guys are just going to sit there with your snorkels dutifully attached to your masks, masks full down and regs in your mouth and do what, sign language? Well, I could not sign because my hands are usually full. I think I will take my reg out of my mouth and talk to my buddy. Like, hey, do you see that tiger shark 15 feet down there under our flippers, looking at you? I sure wish the boat would hurry along. Hey, can you hold the sausage a moment, I need to clip my camera off a little better and so on.
And if I lose my dang mask, which has never happened in 40 plus years of diving, I generally have another on the boat. And one thing about us Baby Boomers, we actually work, somebody has to pay taxes to keep this showboat afloat, so I can afford a dozen new masks if I keep losing them. I do not care if I lose my mask.
N