This Vid had my GoPro mounted on the very front fairing, just below the windshield. It's kind of boring after about 2/3rds.
You can see the shadow of the bike off and on, so it works okay in that way. That position also let's you see the lean angle, which after trying it "on the helmet", showing almost no lean angle, I thought was a necessity.
My complaint is that pretty much no matters where I tried there was too much vibration. My software could get some of the vibes out, but not all. Best I've found so far (for vibration) was on a Ram Ball mount. But I don't really like the view through the windshield.