Re: dinghy bottom wax
Try "Easy On Bottom Coating" from Boat Armor. West Marine Catalog # 247777.It's a soft wax that, after applied, makes cleaning off any accumulated growth very easy; it does not prevent fouling, just makes the surface easy to clean (some fouling even falls off when the dinghy moves through the water). I used it on my West Marine(Zodiac) inflatable when the inflatable was in saltwater for an entire season. Also permits the surface to be repaired if necessary after the wax is cleaned off with soap (which would be difficult to do if bottom paint was applied).