I cover every inch of the top of my platforms with safety tape (the technically correct name for "sandpaper tape" ).

I was an account manager for WW Grainger for five years up until this last year, and bought several rolls of it while there. Anyone can buy it though using their company's account number (you don't have to know it; just give them your company name). You can find it at www.grainger.com, and probably a myriad of other places as well.