This cache did actually take about three hours to place, granted we weren't in any rush. You could probably do it quicker than that if you really wanted to.
A muggle friend of mine lives in this area and mentioned he saw some satellite photos of abandoned boats nearby, so he wanted to go exploring and find one. I said hey, why not put a cache there!
Be forewarned, the terrain 5 is not just because you need a boat. I often think the boat requirement is an easy way to make an otherwise simple cache a T5. This one is a true T5.
We kayaked out there and then slopped through some nasty muck just to get to ground zero. It was about medium tide when we went out. If you go out at high tide, you might be able to get to the boat without getting out of your kayak, but you will still have to go through some very dense mangrove trees in a couple tributaries.
I'm not sure where the best place is to put in. We used my friend's dock since he lives on the water. There looked to be a spot you could use near 27.99729, -82.587810 but I don't know the business owner or anything. Guess that makes this one all the more fun to try to get to :o) Hope you enjoy the hunt!