I'll take "Cool Shit You Find on the Trail" for $600, Alex
great ride today with the old crew (at a distance, of course). started off sketchy, down a long, wet and ledgy descent, but traction was fine, after that. sun dried it up, quick. 3rd day riding in a row.
lots of n00b hikers out on the trails, these days. everyone seems to be unusually respectful, but I imagine that has way more to do with minding the covid gap than anything else. one old lady got way off the trail and held her hand over her mouth and nose as we passed.
on the gopro setup, for me it works best hanging upside-down and all all the way til it stops against the chesty plate. puts it at roughly a 45* angle to the plate. so if I'm standing full upright, it's shooting mostly sky, with maybe my throat/chin in the top of the frame.
if your riding position is very upright, then you can add a knuckle between the plate and the camera to give more room to rotate it more parallel to the plate. I seriously doubt that's any mountainbiker's normal body angle, though. maybe if you're seated with the dropper post slammed all the way down.
I used to run the camera rightsideup with the extra knuckle in there to push the bottom of the camera out far enough to get the same angle, but it's too clumsy, and on very steep terrain, where my body is near parallel to the ground, it would max out and still shoot mostly top tube. flipping it and taking out the extra knuckle lets me swing the camera up for long downhills (Angel Fire) when I'm parallel to the ground a lot.