Originally Posted by mikedj

I've seen these "chocks" advertised for some time on RCGroups - http://www.rcgroups.com/forums/showthread.php?t=2442718

I have no connection to the seller or the item, and I've never used them, so I don't really know anything about them other than what I've seen in the ad, but they look interesting. If nothing else, they might spark an idea.

Mike