Hi RC, FWIW we are using Altrex AF5, pretty easy to obtain in Oz. Slightly warmer water
up here in Adelaide, but the boat had AF5 in Melbourne, Westernport, for years, which would be very similar in temperature at least, I should think.
Still very good clean bottom after 18 months, I only pulled the boat this year at about 19 months because the prop-speed had given up the ghost. We never do the diver-bottom cleaning
thing, never had anything to scrub off, except a little fringe at the waterline. I suppose if we were racers we would give the bottom a light scour during the 18 months... dunno though... don't race
More importantly, how is the great paint removal