I've hit the mat with several arrows since I first put it together in the 4x6' format.
Haven't had nocks bounce out.
Arrows come out easy enough. They do need a little coaxing but not bad. You wouldn't want to pin a paper target to the rubber and use it for a primary backstop, that would get old fast, and the rubber would not last too long with constant hits.
Shooting the fatter field points like the 200gr/250 gr, It is easier to unscrew the point before pulling the shaft back out.
Shooting the 35# bow, with a 400-ish grain arrow, the point typically goes through about 2-3" out the back. Even at 40 yards it penetrates almost that much.
Shooting the 50# bow, with a 600gr arrow, it penetrates more like 6" or so out the back.
Here's a before/after of the relative size. I believe the 4x6 mat is around 80 lbs.