It's a bit more than I would spend. But thought it to be a cool way to do panels. http://nh.craigslist.org/tls/1790798713.html
It's kind of a poor pic. But if you look close you can see the clamps lock into the rail. Lock in the bottom set of glued up panels. Then move up a row and start over.
Here's a better pic of one all loaded. http://www.redmond-machinery.com/jlt_8_panel_clamp.htm
And after looking at the prices of the system 15 hundred aint such a bad price.