If you mean video, I've tried a couple of things. The first was a kind of clamp that I attached to the handlebars, but the vibration was too bad. What worked better was to bungee it to the top of my tankbag. If you turn the steadyshot feature on it isn't too bad. For some significant $$ there are systems that attach to your tank with an aluminum arm, but I was too cheap to go that route.
I have one that mounts to the handlebars to. When I took it for a test ride it was way to shaky, these vtwins like to rumble. I modified it with a T bracket and bungeed it down to the handlebars. Cost for mod maybe 8 bucks. The before looks like MIchael's Termignoni video, and the after looks like his Ridgecrest video. I believe the tank mount system will probably have same vibration issues, monster's just have the shakes. I bet using a helmet cam system would eleminate most vibration. Either mount it to you helmet or mount it to your lower cal if you have one. These are tiny camera's with little weight and wouldn't get affected as much by vibration. You would still need to have you camcorder though, they are just remote lens in a sense, they plug into your camera witch you can store in a tank bag or a backpack. I also like this option because I don't want a rock hitting my camera lens, that would suck, whereas these helmet cam systems have lens covers that are made to withstand flying gravel, plus they are waterproof.
I am a huge autocross junkie, running a CP mustang. A lot of the other guys use the cone cam http://www.conecam.com/
Its basically a camera lense that you attach to your video camera via cables. Ive seen it mounted in all kinds of places (vid of a front wheel/suspension during a 60second run) Its pretty neat.