Gary, sorry if I sounded condescending. That wasn't my intent. My first impulse toward your question was "Aggie-Bass", but that would have been a self-incriminating comment.
Regarding your question (further validated by your linked-post): Through this lay-fisherman's eyes, my first question would concern factors such as water-clarity (effect on line visibility), baits, techniques and maybe a few others that might be evident upon first-hand inspection. Also, is it possible that others may have enjoyed the fruits of your labor during your absence? – and eaten the evidence – thus reducing your Florida strain population without your knowledge.
I've fished ultra-clear Hill Country creeks to coastal potholes and frequently watched bass (genetics unknown) come up to tactfully worked baits, only to snub their nose at them. 1) they weren't hungry, 2) they were alert to the fishing line, which looked like ski-rope in those conditions, 3) the bait simply didn't produce a predatory response or 4) I just wasn't good enough to fool "em.
In short, several possibilities exist that may explain your circumstance. No definite answers here; just things to consider. But, Florida's are certainly catchable under certain conditions and at certain times. The record books are proof.

Kelly Duffie
Cypress, TX