To expound a little. Get a GOOD carnuba wax (or silicon or teflon if you insist on non-natural stuff). Wax everything with gelcoat on it (besides the bottom). That means the dash, the interior that isn't carpeted, all that stuff. If you do that once a year, you should be fine on the sides. However, you need to get the top cap more often... every few months.
There are two products worth looking into, but these WILL NOT REPLACE a good wax. One is Kick'nBass Bass Boat Clean and Shine. It is a spray-on, wipe off cleaner with some carnuba wax in it too. Strangely enough, the other product I'd mention is made by Make 'em Bite (another scent/attractant company), called Make It Shine. Both products are 1 qt (32 ounces) if memory serves and $9.99. I've never seen the KnB product in retail stores, but some of the boat shops carry the Make It Shine product. Make It Shine is NOT a cleaner, simply a spray on, wi'e off wax, so you have to have a clean boat to start.
Now, like Rob, I've heard NOT to wax the pad because it causes the water to stick to the hull, making it slow down. However, Cosmic (Ken Kross, founder of Kick'nBass) recently stated on bfhp that putting his product on the pad will increase the speed by 3-4mph but putting it on the prop would cause you to just sit and spin the prop because it was too slick to grip the water. Therefore, we obviously have two contradicting points of view.