I had one for my 7' table that used to sit on top of the rails. That didn't work when I switched to a 9' GC1 since the ping pong top had a metal edge that would dig into the rails and wouldn't sit right when it was on them. I just made some wood braces to support the table top from the bed instead of sitting on the rails and that seemed to work. Far from ideal, but it was cheap allowed me to use the $150 sporting goods store ping pong top I already had