Hello Tim, I assume a 3.5 × 7 foot pool table will "fit" but you'll need to use inch hint sticks for the majority of the shots. You may have the ability to utilize a basic dimension cue along the open side of the room. It's not ideal however are you really mosting likely to be holding Billiards Tournaments? What size space you require for a pool table is established by the size of the table itself and also the size of the swimming pool cues you'll be making use of.