I'm not sure what Tom Knapp uses, but I have a camera mount that attaches under the barrel, under neath the magazine cap. It holds the camera off to the right side of the gun, and works pretty nice. There's a shock absorbtion system on it but it still jumps a little bit. I bet it'd be much clearer if youadded some kind of recoil reduction to your gun. Only down sides are theres a bit more added weight, and it's hard to fit it in a gun case with the mount bracket attached to the gun. I got some decent footage of goose hunting soo far this year and plan on going back and editing it and putting it all together. Anyone know of any good film editing programs?