It has long concerned me about certifying divers in cold waters on hot days.
I don't know what the temp was at V/S, or any of the other springs for that matter, but the scenario remains the same in the cave/spring country.
During the warmer months hordes of students show up for certification courses only to don wet suits and loiter about the grounds until such time they can get into the water and lower the body temperatures.
The elevated body temperatures can cause a great deal of stress, especially among older and physically unfit divers resulting in the increased probability of critical health issues.
It probably be prudent if "cool down" showers were positioned all about the preparation areas.
I'm sure this will escalate into a diatribe regarding proper oversight of student divers, proper planning, proper hydration and constant body temp reduction through rinsing, but I had to mention it regardless.
I know the springs are great places to certify, but their "colder" temperatures requiring full wet suits in the hotter months just seem to be a recipe for catastrophe, yet I know it will never abate.
the K