I just opened my gym two weeks ago today. I'm at 38 members and counting. I'm signing up an average of 2-3 people a day. But to answer your other question, it's very limiting. I can't sign guys up quick enough to fill the classes just yet, so most classes have been averaging about 4-10 guys. I'm thinking we'll have to double our enrollment before we start seeing really packed classes, but I've trained at gyms that were this small permanently, and it sucks. My first instructor was really hard on people, and tried to make them quit. He wanted to weed out people who weren't tough enough to train at his place. After a couple of months, you've gotten so used to rolling with everyone you just know their tricks and don't develop new defenses. Needless to say, I got out of that place.