Oh, I forgot to add that I ended up also purchasing the overlay, it really helps with ruler work. I ordered a 36" Q-Snap rail for the front edge to help keep drag to a minimum
http://www.qsnap.com/ (you have to call them to order) for under $10 incl. shipping, which is what I attached the overlay to my machine bed with. I didn't want to mount it permanently. It still wasn't quite slick enough, so I took the advice of many, and ordered a can of "Sullivans Silicone Spray". Now everything has come together and I'm really enjoying it!