We sure do like this discussion....
... Someone asks (often innocently) what works, someone answers... Islands 44 by Seahawk (with a very small quantity of the dreaded TBT) is often cited since it is indeed what many of us out actually cruising in actual boats in actual tropical waters find to work.
Petty much how a discussion forum works right? Question asked, question answered. I made the error of answering this ones or twice, and some folks don't like the answer. Even Fstbottoms agreed in another thread that paint
with TBT is the most effective. It is also likely that many (or at least some) of the boats he cleans have been painted in Mexico
with good old Seahawk with TBT.
In a perfect world, the energy would all be solar
. The sewage would all be composted (I am doing my part on both counts) and our boat bottoms would be painted with something wonderful like butterfly farts that would simply last and last and keep those little sea creatures happy as they passed by our hulls with smiles on their little barnacle faces....
Until such a time as someone comes up with something that works... I mean really works... I submit that the "evil" of effective bottom paints probably is outweighed by two factors.
First, the paint
lasts... So the costly and labor intensive process of scrubbing paint off into the water
colum is not as necessary.
Second, when the boat is operated it is often under power for at least short periods of time... We know that the more fossil fuels we burn the less we experience such cold winters...
So, button line... Seahawk islands w TBT is likely the best answer for the OP.... Unless someone has a source for butterfly farts that can be applied.