I've been using the (relatively inexpensive) West Marine CPP Ablative paint for more than 15 years with good results. This summer I have a new (to me) boat, but roughly the same size, and at the exact same mooring, and have had different results. I've used the boat about the same amount. The difference, is lots of slime, where in the past, there was much less. (No substantial barnacles or other marine life). I applied the paint the same as I have in the past... the only real difference there being color (old was blue for 15 years... new boat is black). Obviously there is the potential that the change is the environment (water temperature, sunlight variation, pollution levels, etc)... but I'm wondering if perhaps there was a change in their recipe for the paint. I don't have an old and new can to compare, but I know in recent years many manufacturers have cut back or eliminated certain chemicals that helped reduce slime. Does anyone happen to use that exact paint, and if so, have you noticed a sudden (within the last two seasons) significant increase in slime? Wondering if the difference is out of my control (like quantity of rainfall or sunlight) or whether I need to change after years of success? Also, and perhaps related... in swimming around the boat, and scrubbing along the water line with a sponge, it SEEMS less ablative than I remember in the past... meaning I remember the old blue stuff shedding off much more (on dinghy painter, on hands, on bathing suits when swimming too close), whereas the new paint seems less prone to rubbing off in the water. Anyone else sharing my pain or observations?