I'm going to have a to play with mounting the camera on the bike, and I guess that this short section from about a week ago is as good as any to use for reference. So I'll try it again next week.
This was taken with the chest mount, but I have no idea currently what the settings on the camera were. I'll have to take a look later.
The chest mount is fine, until like this, you lean forward to ride downhill. The vibration level still seems very high to me though.
As an aside, this ride bagged a KOM without using any assist.
This could also be another good one to try. You can see how bumpy that it was from the counter. This was another KOM attempt, that I have spent two years trying to get. I'm in second spot, but need to gain an impossible 15 seconds, and have now given up. The KOM was set about three years ago, when the track was pretty much smooth. It's now washed out and horrid to ride. My average speed down it was 18mph, and I need an average of 23mph, just to be even. It'll still be a good one to try different camera mounting positions though.
You can see by the handlebars that there are lots of small jumps and hollows.