Hi,
As far as I know there are only the type of change pads/tables you mentioned.....we also had the one with the strap that goes across the chest.
My son was not too squirmy when he was really young but as he got a little older, 4 or 5 months, he became very difficult. You didn't mention how old your son was.
It's tough, and the only thing that seemed to help was to distract him with something, give him something he normally doesn't get to hold or see to occupy him with or if you get really desparate starting singing a funny song or something that will catch his attention for a minute....or make some funny faces just long enough to get the diaper off and clean his bum
Good luck!!