Why? Not saying you are wrong, but why do you think it favors the gators? I will just say rain will give advantage to the team that can run the ball the best, and hopefully that is the Vols.
If Spurrier were the coach, absolutely! But he's not.
Spurrier used to love rainy games, his thoughts were "when footing is bad, it favors the offensive player because he knows where he's going, the defensive player doesn't necessarily know where he's going." And when you think about Spurrier offenses, his teams killed it when it was raining.
But with Nussmeier, it'll likely mean Florida runs it up the middle 90% of the time to play it safe.
I will add this; Gainesville (aka Rainsville) gets rain almost daily in July and August and I know it was a particularly rainy August this year. So if nothing else, Florida has practiced a ton in the rain.
But again, no confidence in Florida's ability to do anything on offense in any type of weather.