I would recommend trying the vinyl from wal mart or where ever you can buy it by the yard. I believe it is 54 inches wide and I use it all the time. It doesn't cost much either. I also got one of there round tubes it comes on so when I take it off I have a place to store it. I wouldn't quilt without it. What I like about the vinyl is I can cover so much more area than just the slider. I do take the slider to classes because you don't always have a large space like I have at home. Just tape it down good and you won't have a problem with it.
Good Luck
Suzy