And schedule regular visits. 

@Frans Calderon all you've been posting about for the last 2 months is promoting Baselane.You may want to post your ads under the Classifieds Forum.

Regular smoke detector does not pick up the smoke.

There might be demand, but oversupply in certain areas, like Orlando, is pushing prices so low that it becomes impossible for some property owners to break even, let alone turn a profit.Agents promoting STRs as "good investments" without considering the current market saturation, high operating costs, and potential competition do a disservice to buyers.

Do you perform regular preventative maintenance to avoid emergencies or are you more reactive?

You should have someone local who can drive by to check on the property, respond to emergencies, conduct regular inspections, etc.

You can achieve this by regularly checking the Search Terms report, routinely searching for your brand on Google, and pulling the actual keywords that are converted in your CRM.

Anywhere else I'd recommend a regular fence that'll be low cost and efficient

meet regularly. 

also side note @Carolyn Yates Docks can and are insured quite regularly.