In this video, you can see the tournament has placed boxes of copy paper just exterior to the perimeter under each beacon. The perimeter (and beacons) now behaves differently when a robot comes in contact with either the perimeter or the beacon than when the perimeter is unsupported. https://youtu.be/ypiWv1RIXog
Is this an allowed modification to the field of play?
This question was previously answered in "Playing Field Setup - Answer Thread", post #10