Armorall will have an adverse affect on the protection you may have on there now. I would suggest a quick detailer(of course Pro Tec) or something similar. Pro-Tec Productswww.protecproducts.com
While we are not fans of Amorall, we have not thought about it on hulls. We do think knowing some about Armorall it would have long term degradation in gelcoat if used regularly.
I use armorall quick detailer on the hull and it works pretty well. But that item is for interiors, so read the lable or call them and ask the question……………..Mike
Im a fan of Bass Boat Saver. Easy to apply, and a little goes a long way. I wax with carnauba wax twice a year and wipe the boat down with BBS when it comes out of the water.