One of the best experiences of my life. Totally recommended!
We got to see dozens and dozens of manatees, and even touched 3 of them. I though we'd be allowed in the water with them for 5 or ten min but we had nearly two hours and because we got cold, so we had to go back to the boat.
The guide was really professional (and helpful), our group was fun, the airboat ride was awesome, and the homosassa park incredible.
I'd repeat right now.