Most, but not all of the shops utilizing springs for the OW dives will be using a pool prior to driving to their favorite spring. There are a ton of springs in FLorida which offer depths in excess of 20 ft, so I wouldn't worry about the quality of your experience.
As an instructor, unless the student will be confining themselves to fresh water diving, I prefer to do the first two dives in a spring (like Alexander Springs) and then trot out to the ocean for the final two dives. This way you get a mix of the diving available here in our beautiful state.
As an instructor, unless the student will be confining themselves to fresh water diving, I prefer to do the first two dives in a spring (like Alexander Springs) and then trot out to the ocean for the final two dives. This way you get a mix of the diving available here in our beautiful state.