A couple more things
If your boat is new, you may want to ask the dealer if they'll do the bottom paint for you before you take delivery. Also, ask if the boat has a blister warranty, because if not, you should apply a barrier coat BEFORE the bottom paint goes on.As far as hull prep for bottom paint goes, you should remove the wax from the bottom. Acetone works well. Wear disposable vinyl gloves and use lots of clean rags. Once the wax is gone, lightly sand the gelcoat to give it some tooth so the paint will grip.I usually tape the hull about two inches above the waterline when bottom painting. It looks like a boot topping stripe, and since it's not submerged it won't wear out. The next time you paint, you can do it without having to tape the hull because all you need to cover is the worn-out submerged portion.If you use ablative paint, apply several extra coats to the bow and leading edge of the keel and rudder as these areas wear the quickest. It's also a good idea to do the first coat in a contrasting color. When you start to see it, you'll know it's time to repaint. Congrats on the new boat and happy sailing.PeterH23 "Raven"