I am in Florida, too, and have been using the Halo, which used to work great, but seems to be failing me now.
I have a Headsweats scull-cap on order and I will actually be using it OVER the Halo. I am a big sweater, and don't like to stop once I get going, so hopefully between the two, I will have my voluminous sweat under control.
If in doubt, double-up!
I'll let you know how it goes.
Slackerprince