I have a suction cup mount from GoPro themselves. It holds fantastic, just make sure the surface is clean, and not wet, or it will slide. I never had it fall off, I do however tie some fluorescent ribbon on it just in case it falls in the snow while riding and I have a chance to get it back.. I think you can get the mount at any camera store that selld GoPro. With my helmet, I use the concave base with the grey double sided tape.