I always find the dive group size thing a bit funny on LC. I have been on the LCBR boats with up to 18 people and never felt particularly crowded. They are 42-46 feet long and have a 2nd deck overhead with lots of seating. How can you feel crowded? I set my gear down, then head up the ladder to the top and never feel crowded during the ride to or from the sites. I guess maybe it is the way I like to dive that makes me not notice it underwater. I love diving from moored locations with little or no current. It allows me to dive any direction I want without having to follow a group, without having to slavishly go where the DM wants to lead me, and at whatever pace my wife and I choose to swim. So I carefully watch the dive briefings and see where the DM is directing everybody to go, I position myself near the back of the boat with my mask and fins in my hand during the briefing, and when they say "pool is open", I am one of the first 3 or 4 people at the ladder ready to go in...and then swim the opposite direction of the group in most cases. Navigation is VERY easy on most LC dive sites, so why do you need to follow somebody else? They draw you a map of the site before you go in! When I get back, I put my gear away, grab my water bottle out of the cooler, towel off a bit, then head back up the ladder...voila! no crowds again.
The most recent TA review of LCBR is from a traveler who complains about the size of the dive groups and how long the diver had to wait in the water for the DM to enter. That to me explains a common mistake. The divers who are used to drift diving in places like Cozumel, where everybody has to wait on a DM/guide and has to stay together as a group are the ones who I can understand having a misplaced concern about having 12+ on a boat. But if you want to dive following a DM, just wait and let the thundering herd enter the water ahead of you and be the last one in the water...the DM is coming in right behind you, so you won't have to wait on anybody else. I think people who have never been diving anywhere from moored locations like LC don't understand that they don't have to follow a group. I see reviews where people complain that the DM was only doing a 40 min dive and then they had nobody to show them anything. LOOK AROUND! There is stuff everywhere. Train yourselves to look for things! Once you know where critters live and what kinds of places they like to hide, you can go and find them yourselves. I almost never follow a DM on LC unless there is something they have pointed out during the briefing that I have never seen and really want to not miss. In that case, I will make a note of where they say it is, then go do my dive and make sure I am at that location about the time the DM finally gets there. I see what/where it is, then I am off in another direction to go find other things to see. My wife and I both love the thrill of the hunt underwater and finding things for ourselves. Swimming around in a little herd of 8-12 divers waiting for my turn for a DM to point into a hole for me to see (insert critter here) just holds zero appeal for me. I would much rather dive my own dive and find my own fun, and be back at the boat under my own navigation at the appointed time. But maybe it is just me...