hey
I bought one on ebay , no audio, but the picture is good, for around 60 dollars. No audio dosen't matter much if you have good editing software. As far as the vibration? well ...little can be done with the small trucks going so fast, but I have reduced it quite a bit by fabricating a shock mount for it. Using the general design of the front tower of a rusty , machining it a bit bigger and doing a four point harness type "holster" with rubber bands, it helped alot!!! But you you really cant expect absolutelly smooth video when going 40 + miles an hour and a pebble is like a boulder!! but still....it is cool to watch!!!!