If you want to use this to film a sailing regatta, the prop wash will disturb the air and cause unfair advantages/disadvantages for the boats nearby, especially in light airs. But it is a pretty cool idea.
I don't know if you can mute the audio on a go pro, because the prop noise would be terrible. also, you might consider a small servo gimble so you can run parallel to the fleet. you ever look at servo city dot com for that sort of kit ? need to swivel the cam !
Yes, very. I had a Mobius on the boat in my pool before going down to the lake and saw how wobbly the footage was. So I pretty much knew I wasn't going to work. But I needed to know how quick it would be! :)