Looks simple. I have the very same blue hulls. I have a small delam spot starting that I want to do this on. Two questions.

1) How deep do you drill the holes? And how do you control the depth of the drill bit.

2) When you're finished, is there something to clean up the holes, or do you just leave them?
http://www.cooknwithgas.com/Sailing/Hard_Hull1.JPG