what about buying some wood and nailing it together. You can probably get some boards the right height and make your own fanny lifter for less than 5 bucks. I have the firm (and the fanny lifter) I can't do the tapes, they are so hard on my knees (as I lose weight and get stronger I hope to be able to do the tapes) I use the fanny lifter every now and then but not with the tapes, just up and down, up and down...

Good luck

Gail