Ray that's a good question and hopefully this thread can be a good document for this subject.
Wish I could remember the name of the other rider on here that did this already, maybe he will chime and and credit can be given where credit is due.
The two mounts he used, one was on the front fork near the lower triple tree. Some kind of a round band around the fork, and the vid-cam attached to that. Very Stable! Anyone who's tried this sort of thing on other bikes knows, an issue we face is vibration. It can be horrible depending on the mounting point. This mounting point is very stable though.
The other point was very clever. Drill a hole in the windscreen close to where the existing holes are and mount a ram ball there. Believe he put the hole in a place where a longer ram ball bolt could go all the way into the frame (the way the other windscreen bolts do), thus making it even more stable.
Haven't personally gotten to doing this yet myself. But they absolutely do seem the best places (vibration wise) to put a go-pro.
Don't like the helmet mounts myself either, just can't feel the lean of the bike that way...