Why can't I find a STR rental in SE florida that makes $ sense?

[Terri Donovan]

I am an experienced landlord hoping to 1031 out of one property into a STR in SE Florida that I can occasionally use. My budget is 450K and I would prefer a single-family residence, but am definitely open to a condo as long as the numbers make sense. I have done some looking at VRBO rates and calendars and have tried mashvisor. I don't need to get rich off this deal but do want the income to have a decent chance of at least covering my expenses. I am looking at Vero Beach area and south. I know to be careful about minimum length stay regulations.

I am having a very hard time finding ads for properties that "pencil out".  Yet, I know from here that plenty of folks are making money on STRs in Florida.  What's the secret? How can I find current vacation rentals that are for sale (that would presumably have  income statements, established clientelle, reviews or all of the above?)