[EricH]

Originally Posted by Andrew Schreiber

Also, is there any reason why they do that?

Ease of removal, I think. The problem is that you have to line it up right for teams because there will always be some team that is using distance from the wall on a fairly precise movement, and if your field is set up wrong (i.e., the black border line being under the wall instead of next to it), it'll throw them off and they complain.

Psst... My point on the mats still stands... Volcanic Panic and before didn't use mats...