There is some kind of silicone sheet you can buy to put on the bed of your machine. It has a tiny hole to let your needle go through. I can't remember what is is called. I think it is around $25 maybe?
Have you tried quilting gloves? I have and they seem to help me. I am very new to machine quilting.
Edited to add:
I found it. It is called SewSlip. Here is a link
http://www.sewslip.com/tipsandmore.php