I don't have a mat yet, I'm still considering a mat vs building a stance platform with his instructions with plywood and insulation board.
I haven't really been able to hit full shots off it yet but it looks like a big improvement over the stock cover, no issues with reading clubs. If anything, I would think maybe it's too thick because I'm having a hard time finding a mat thick enough to cutout and drop in place.
I was looking at golfsimulatorguys mats before getting this cover but not thrilled about the price point...