looking for a credit line against rentals in Florida

Good luck with that one...Try calling a local bank in that town

Unlikely unless the properties have very low Loan to Values or are paid off. You might consider a cash out refinance on investment.. .you're maxed out at 75% LTV, but this is a conventional loan product.. and done often.. But finding a HELOC. that's going to be tough on investment properties.. like Ralph suggested, you might try calling on a local community bank or credit union in the area your rentals are in.. but most certainly, the big box lenders will not allow this. I'm a Broker here in Scottsdale AZ and I only lend in Arizona. If you or someone you know is looking for financing options, feel free to contact me or pass along my information. William J. Acres, Lender411's number ONE lender in Arizona. 480-287-5714 WilliamAcres.com NMLS# 226347