 Just, you know, they're hard to use and you had to pay attention to the weather and you had to keep people off of it for 24 hours. And I knew there had to be a better way. And I looked around for something different that I could just press in there and there wasn't anything. So basically, I got a little chunk of foam and I had a little bandsaw and I cut a shape that I thought would fit in there tight and hold itself in.