I recall there was some equipment that blocked the holes in a table so you can play some sort of 3C game on a regular pool table. I don't know if that stuff is around now or now, but using them on a regular table to block 4 pockets would get the same effect, granted with a bit more slop in the fitting.
The equipment was basically wodden blocks with an adjustment screw or 2, with some cushion material on the face. Would probably not be that hard to make even if the official item is not available.
The equipment was basically wodden blocks with an adjustment screw or 2, with some cushion material on the face. Would probably not be that hard to make even if the official item is not available.