It may be that your tires simply don't have very good traction on wet pavement. They are MS tires, which generally don't have the wet pavement traction that all-season and summer tires have. What you get in added snow and off-road traction with an MS tire you usually give up in wet pavement traction, generally speaking. Since you live in Fla., you don't need snow traction. If you don't off-road or don't off-road much, consider switching to an all-season tire known for its wet pavement traction. Also, as already pointed out, take it easy on the acceleration and the quickness of your turns, lane changes, and etc., and remember you can't stop as fast.
Bright Red 2003 Edge Plus, 3.0 liter, reg. cab, 4WD, manual trans., 4.10 rear end.
Mods: Speedliner spray-on bed liner. Air box mod. K&N drop in air filter. Gibson Sweptside single pipe catback system. James Duff traction bars (above the springs type). Delta Industries black polyethelene truck box (mounted on the driver's side of the pickup box between wheel well and cab). Hidden Hitch receiver hitch. Side window visors. Door pockets.