Rocker, here is my take, and this may be a long reply. I just purchased an Hunter 34 that sat on the hard for 6 years with no wax and no cover. It is BAD. Very dirty, oxidized and pitted. So oxidized that if you run your hand across it, it looks like you just ran your handover a chalkboard. HOWEVER, there is good news. Everything depends on the level of oxidation, so I will tell you what I have read and what I have done. In my case, because it was pitted so bad, I had to start with a 600 wet sand, then 800, 1000 and 1200. This will leave the boat VERY dull, BUT, very smooth with all of the oxidation removed. The next step is a product from the body shop supply store specifically for gelcoat called "Presta - Super Cut" Apply this per directions with a buffer, first at low speed, then use a water misting bottle and at high speed. Move in a North / South, then East / West motion. At this point, the boat looks amazing. Huge deep shine and smooth as glass. Next step, a polish applied with a buffer using the same up down left right motion. Final with a UV sensitive polymer wax. When done, and done properly, it will look better than it did when it left the factory. Remember, this is a commitment, cause it is a big project. Also, you need to gauge what steps you take based on your level of oxidation. You may be able to start with Super Cut and just move forward from there. Also, remember, gelcoat by nature has micro-pits in it. You will not get that luster back until you smooth all the pits and create a continuous reflective surface. Gelcoat is also UV sensitive... So a good UV sensitive Polymer wax is a good way to slow the aging process. Please remember, gauge what I have done, on your own situation. You may need a wet sand, you may be able to start with the super cut, or you may be able to de-wax and just start with the polish then the wax. I hope this helps and good luck.