DC,
We used those exact Mats in high school shooting Olympic Recurve........IMO they suck.
They're fine for a couple of sessions and low energy set-ups and or long range shooting where you aren't going to really wear it in one spot, but at 20 yards that nice steel stand behind the mat ate up my 1816 Aluminum shafts like a paper shredder. [:@] (Out of a 35# recurve)
I haven't shot at one in about 17yrs or so, but that was my experience......I can still remember that sickening "Clang" on a passthru.