I'm not.

No offense to 240M3SRT but this was the first time he even used a clay bar....... let's not put some sand paper in his hands just yet!!!!

Wet sanding is not for the feint of heart, and definitely not for the novice. I spent most of the week between Christmas and New Years helping with a wet sand, cut and buff job on the Alpine Electronics custom vehicles for the Consumer Electronics Show (pictures will be up in a couple of days at the Meguiar's forum - we had to wait until the vehicles were revealed at CES this week) and it takes real skill to do it right. I was working with a couple of uber-pros who have been doing this for years and think nothing of breaking out the big guns when detailing cars as high end as Pebble Beach class winners. This was all fresh, custom paint done at Santini's shop here in SoCal and we wet sanded with 1500 and 2000 for the most part, then used wool pads on high speed rotary machines with the new Meguiar's M105 Ultra Cut Compound. This is a brand new product in their professional line and it's just amazing stuff. I've got some reflection shots taken after using just this on a wool pad, no wax, not even another finishing polish, and I don't think I would have believed it if I hadn't seen it in person.

As for removing the water spots, or any other defects, ALWAYS start with the least aggressive approach. Wet sanding is a LAST RESORT ONLY!!