Here is a video of what a snap really looks like. I captured in at normal speed and then slow motion so you can see the timing of the inputs. I used high rates so its pretty easy to see whats happening in slo mo.

Pay close attention to the CG, nose and the tail in the slow motion. You can see the CG stay on a pretty straight track and the nose and tail cone tightly around the CG.

I am sure someone is going to criticize. If you can backup your crituque with helpful information, help yourself. [8D]

I dont really like the way youtube reproduces these videos. It plays a lot better if you save it to your harddrive.

[link=http://dodvideos.com/snaprolls.wmv]Snap Roll Video[/link]