So I tried the bungee chord idea

First video = iPhone bungeed around man boobs (made me nauseous watching it)

Second video = GoPro13 on same rocks (not nauseous after watching)

Third video = Insta360X4 showing my setup

Not sure what makes me look more stupid, riding with a phone bungeed to my moobs, or riding with a selfie stick.

Also, riding with that thing strapped around your chest is pretty uncomfortable. Not bad for 1 dollar though.