I'm considering a Florida vacation with my 10 year old son in March. In previous years we've spend time at Tradewinds on St Pete's beach, but I'm often the only one in the water (temps about 72 deg). This year I was hoping we could head further south. Do you think the water temps are much warmer in Sarasota? If not, where on the gulf coast would you recommend for warm water and beachfront accomodations?