I have used silicone adhesive caulk. I usually use velcro and then put caulk around the edges... I like to let it dry overnight before running... I have also used caulk on a foam surface that I made (sort of like a sponge) ... applied generously and let dry overnight... It was nice an cushioned.... It lasted about two months.... I think it protected the esc while it lasted.... big track jumps was probably its' undoing...

I have used this:

http://www.hobbyking...81-252D1F706A4C



Very strong, really cheap. Keeps all my stuff in place even under hard bash.

see:
http://www.youtube.com/watch?v=HWZU2...ature=youtu.be