Eddie,
Some years back, WAY back! I put a product called CopperPoxy (10 year bottom product) on our bottom in the San Francisco Bay area. I was amazed at the flurry of of posts and email telling me how big a fool I was. So, I hired a diver to inspect my hull every 3 months. I also had him give me a short informal written report each time. After the third visit he said he would be back about every 6 months to check my zinc. That product lasted 6 years in the San Francisco Bay area, then 5 more years along the West coast and including 4 years in the HOT Sea of Cortez. You can see my write-up about it on our web pages.
When it was finished (11 years) I dd a regular bottom coat for a year, then I ordered a product from a resin dealer in Fla. that also supplied copper powder. I mixed it myself and it DID NOT work!!! The product was just regular epoxy.
As I write this my boat is back here in the San Francisco Bay area on the hard at the Napa Marina and yard. I have just applied a product called CopperCoat. What is different is that the epoxy used in this product is water based. You heard that correct! You do the clean up with simple water. Once the 4 coats are on (wet on sticky all in the same day), the boat has to sit for at least 48 hours before you splash, and you need to scotchbright it just before you splash also. BUT, it's goo for for 10 years and I do not have to reapply every time I take the boat out of the water for a time.
It's far to early for me to say anything good or bad about it, but I did see it work very good on a mooring ball in Puerto Escondido Mexico. I think if it works on a ball, not moving it should work for my boat???
And as a side note, when I was in Mexico I saw many people add all kinds of stuff to there bottom paint from pepper to Roundup and never saw ANY of it work!
I will report back when we haul in another 6 or 7 months.
Greg