For example, the laws in Texas allow me to include specific provisions in my leases that might not be legal in states like New York.One such provision I enforce is that once a tenant gives notice of non-renewal, I can immediately begin showing the property to prospective renters.Because its so state-specific I would reach out to a NY landlord, agent or property manger for more geographically specific advice. 

I  have about 220 leads after my team ends in my list and I have 3 options:1) research and   implement an interactive voice response technology to pick up calls for me when my team is off shift2) Pick up calls myself after my team's shift (this. risks breaking the systems I implemented in my business and also enforces a bad habit of working "in" my business3) Do nothing.

Then we started having issues with the city code enforcement and water company and being fined.

I've heard that the Sarasota County is in need of money (and that's the reason AirBNB deducts taxes and directly passes them to the County) - how strictly are those rules enforced? 

If you want to contact a listing agent to see a property they will likely need to send you a "disclosure of no agency relationship"  Moving forward agent's cannot show a buyer a property without a brokerage agreement in place, it was always recommended but never enforced

Otherwise, I think the 7-night stay restriction they have in place IS enforceable as @Andrew Steffens mentioned.

This notice stated that a re-inspection would be carried out 12 days from the mailing date and advised contacting the code enforcement officer prior to the inspection date to discuss informal resolution.

It looks like the Board outsourced part of the enforcement to a 3rd party company.

Mitigate with deposits and enforceable lease clauses. 

That said, "chickens coming home to roost" from the various seller-financing deals done WRONG is a very strong potentiality, as issues of such will most likely grow in occurrence and thus possibly press internal audit's that uncover such, and resulting enforcement actions start enacting in a volume.