I've got the 1200lm C&B Seen lamp for mounting on my bars and it's great, except I find that it spins backwards on the bars over rough ground. It's the typical rubber band method of fixing that's the problem. I've tried tape on the bars, which did nothing, so now I want an actual clamp.
Found this Hope universal clamp, which might work. Looks a bit crappy and plastic though.
Anyone used it, or another derivative that works well/better?