greeting, i went down florida last month as part of vacation and taken class for open water certified and i pass it..... phew- puh. i might go back again for pph(practice more on buoyancy) and nitrogen and might try for advance open water as well. i will stay there bit long than last time. right now i want to check with doctor-ent and others to made sure my body is good condition for while in short term without any surprise-- you never know...anyway, i was able to enjoy it even through too busy for try to swim in water such as buoyancy and trim so, i would not relax to allow myself be able to sight around in grotto ( devil den and Hudson(did see some status) since i was too focus on myself(swim alike a sea-dog, lol). it was new experience for me...asl instruction was helpful even in water without it, i may have more difficult.