I recently modified my waste board and put some 20 mm holes spaced 3 inches apart all across it. The clamps aren’t the cheapest option out there, but for a low profile speedy and secure clamping they can’t be beat.
Here you can see them in action holding down my cutting board.
Festool Clamps
Amazon has a little sales video.
http://amzn.com/B000JNEC1Q