[Rick TYler]

I know I'm late to this thread, but with the foam tiles that make up the playing surface, Velcro won't help much (I would say "none" but I haven't done any testing) and runs a good risk of damaging the surface.

In the past, we've had pretty good luck wrapping tires with friction pads (still legal in FTC? I don't remember). The new FTC tires are rubber, though, and already have frightening amounts of grip on the foam tiles. I doubt that grip is going to be a problem for anyone.