I guess I was just cheaper than the rest of you. Had an old mattress pad that I cut in half and stapled to my board. I cover that with muslin that I can take off and wash when it gets too nasty. have been using this for years and the muslin is getting thin in places. we marked the sides of the ironing board on the bottom of the plywood and screwed
stops in a few places around it, now it is easy to put in place and have it stay put until I want to remove it