I noticed that the video doesn't play either, but if you click on the 'pattern #' in blue, you see a diagram of what Kathy is talking about. It seems this tips tells you to string the loom with a 'line of beads' on either end and run your warps through them. The four corner strings are what you would be needing to 'hide'.....sounds like an interesting idea.....I would suggest working your looming to adjust for the clasp....each clasp can hold many secrect ways to end a looming.
Erin