I just want to swim around, so I’m game for anything. There are bream beds there at about 20ft, if I recall correctly, that you could use to simulate swimming over a reef. There are concrete pipes that you can swim thru and they have some diamond shaped pvc thingys suspended in the water that you can swim through too. I drove a DPV thru those once very fun. There is a sailboat wreck at around 70 feet and a school bus near by, a little deeper I think. Both are marked by a bouy with a rope leading to the "wreck" that has a big knot at 15 feet, so you can practice safety stops.