I am repainting the bottom of my Hunter 23. Its year round in the waters of North Carolina in brackish water. I have about a few 5 gallon drums of some older paint from a friend. One is Brand: International 4050, Vinyl Antifoul paint, cuprous oxide 66.80 copper 58.45. Other is Brand: International Bra640 Red antifoul, Cuprous oxide 41.07 and copper 37.11. Which is better if any? I am sure there might be better out there but I am on a limited budget and thought if free worked then free it is! let me know pls! thanks