There is a bit of a learning curve with the cardboard for sure ADC. This is where the HD stuff you get appliances come in is the key It doesn't curl like the thin stuff....and I tape the edges with the clear packaging tape. About any appliance store will have enough for a few layers if you want (more is better of course).

I toss a lot of wet rats and even a few dumb coon and beaver on it and it dries from both sides this way. I've not had an issue with it coming apart, personally....but I keep fans on the wet stuff constantly so it doesn't go soggy.

I use and like the rubber mats as well if I'm standing in one place long (under my beams).

Boco what knife is that? All I seem to find is the wooden handled Dexter knives and I like that handle much better.

saw dust makes blood and grease a easy clean up also helps prevent slipping on a bloody floor! I prefer planner chipping most a coffee can worth under my skinning rig will last a season.