True, haha! I have used them, but never to a large enough extent!
I was thinking of using them in HIT Circuits in my basement, like,
Crab Walk-10 Times wall to wall
20 Pushups
Bear Crawl-10 Times wall to wall
25 burpees
Suicide Sprints-10 Times wall to wall
etc... in circuits like said! I think they'll be pretty good!