I'm too cheap to buy a slider type product. I actually used waxed paper on my "quilt extension" table that came with my HV Sapphire machine (not too cheap to buy a good machine!!!). It worked very nicely, so maybe once I get moved, I'll give in and buy one!
Try waxed paper, it's cheap and painters tape, which leaves little or no residue behind. And if the paper get's caught and tears, you have a whole box of it to repair it with!