Realistically...
Date-Check has a Florida section...
RS2K Travel has a Florida section...
P411 has a Florida section for advertisers, as well as a board providers can list on...
TER has a Florida board and advertising...
BigDoggie has a Florida board and advertising...
Eccie has a Florida board and advertising area I am sure...
Eros has women who advertise...
But... You are talking about Miami Companions territory. Yes... They are long gone but that is an area where it's hard to convince traveling girls to go because they don't make the money they need to justify things. A lot of the "locals" are possibly not what you would be looking for. Because one of the longest standing agencies in the US that was based in Miami ended up going down in a flaming ball of FBI investigations...
You need to be prepared to provide:
References (plural) and/or a Date-Check membership and/or a RS2K membership and/or TER Whitelisting and/or a full disclosure of work information...
As well as full name, contact information, etc.
If you haven't gotten that lined up before you attempt to book... It may not work out. I am not saying this to be mean... I am letting you know how things are down there. The demise of MC was a huge blow to the community down there.