Re: Plyo boxes and lessons learned
I found some approx 18" x 18" interlocking rubber "tiles" at Menards here. I cut off the interlocking pieces on my table saw. After cutting those edges off they were the same size as the box tops (17 1/8" comes to mind). They have quarter sized raised areas on them for grip. They aren't soft at all though, so if you ended up on your knees coming down on one, it would hurt.