I bought an R19 knockoff 2 yrs ago, mid-summer. It is old, with a thick glass hull, and no apparent problems. It was a lake boat, so the bottom had never been painted. The rest of that summer, it lay moored in Lewis Bay, picking up the usual detritus. I hauled out in the fall, scraped, etc, and painted the bottom with Pettit anti-fouling ablative. It then sat on the trailer until last Memorial Day.All last summer it lay moored, and the occasional scrub would remove any slime. Only a few barnacles attached. When scrubbing, some paint would come off in the water (slight "blue" tinge) but not down to the glass. I hauled last fall, scraped, scrubbed and got it nice and clean, where it sat on the trailer until now. My Questions: 1) should you launch soon after painting? If so, how soon?( I was told I shouldn't have painted in the fall and waited until spring to wet the hull); 2)Should some paint come off when scrubbing off slime during the summer? Any assistance is appreciated.