The pictures below show the preperation of a 32′ Yellowfin for its first application of bottom paint. We let the boat soak for a week to establish a waterline and then blasted the hull leaving a crisp line and a etched hull. Epoxy barrier coat was applied with 2 coats of ablative to finish off the job. I suspect this boat will require a seasonal reapplication of ablative since it should ablate faster than most, it cruises @ 40+mph.
Click any picture to enlarge them. You will see the scum used to establish the waterline as well as several that show the finished boat with waxed hull sides vs. the etched bottom.