Do you use heat? If so, you may want to do it sparingly, especially in Florida. If you must, hydrate your hair like no one's business. Hair is like a sponge, so the more moisture you put into it, the less it can expand and become frizzy and pouffy.
Since your hair is fine, try a serum or a light oil, cream or pomade. Shine serums are a styling "secret." Not only do they impart shine, they alse hold down fly-aways and help get rid of the halo of frizz that sometimes pops up in warmer temperatures.
Neutrogena has a shine serum in their new Triple Moisture line that's a good all around serum and it won't weigh down fine hair. It also moisturizes pretty well since that's key to getting rid of frizz.
Make sure you use a moisturizing shampoo and a good emollient conditioner and deep conditioner.
Frizz Ease and CitruShine are good serums too. You can also try Tigi Camera Ready Shine and Defrizz.