I picked up a 2002 27 Contender a couple months ago and have been busy getting it back in shape. This boat was a tender for a 128ft Broward. It was in pretty good shape over all, but the gelcoat was very oxidized. There was zero shine and the chalk wouldn't wash off the hull. Finally finished it so wanted to post some pics.
Basic steps were: (washed between each step)
Wetsanded with 1000 grit twice
Didn't like results so went down to 600 grit twice
Back to 1000 grit sanding
AquaBuff 1000 doing each section twice
AquaBuff 2000 doing each section twice
Two coats of Starbrite wax
It was a TON of work, and I have several weekends invested in it including a helper.
Didn't realize how dirty the bottom was until we started cleaning it.
You can see how faded the hull is in this pic.
Wetsanding with 1000 grit
I didn't think 1000 grit was doing enough so I went to 600.
Started with AquaBuff 1000.
AquaBuff 1000 twice
AquaBuff 2000 the second time.
Finished with 2 coats of StarBrite wax.