Fungal disease goes rampent in high humidity areas as you said, but pictures would be helpful. You may have more than one problem at the same time. There is: physiological leaf roll, which doesn't hurt the plant. Curly top virus; which does hurt the plant. And, I am not sure, but I think fusarium and verticilium can cause leaf roll in certain stages. Verticillium likes cooler/moist weather and fusarium likes hotter/humid conditions. I don't think you mentioned spots or yellowing. Are you already using disease resistant varieties? Det? indet?

I have moved to an area with a lot of disease and I'm trying to straighten it out by going organic. I want to use heirlooms, But the disease and pests are still winning.
If I fail again this year, next year I think I will go with fast determinates with resistance and stagger planting them out, so I can have tomatoes for as long as possible.

I forgot to mention, Florida has a tomato that is indigeonous there and you might have some luck with that variety.