There are two AKC sanctioned Clubs in Florida - Gulfstream Rottweiler Club, based in Miami, and Seminole Rottweiler Club, based in Tallahassee. Both clubs have members statewide.
Seminole will hold a Specialty in Valdosta in a few weeks, with the rest of the weekend here in Tallahassee. You can find information on these shows at
Home Page, InfoDog -? The Dog Fancier's Complete Resource for information? AKC Dog Show Events, and Dog Products and Services
There are also USRC Clubs, the closest is in Central Florida.
Other than that, there are many training clubs, either AKC all breed, DVG or USA.
In Jacksonville, there is a fabulous Agility trainer named Stewart Mah.
Hope this helps.