I have some minor swirls on the G. Probably due to the crappy sponge I used. There's also a few water spots on the car that are hardly noticeable. I was wondering if Detailing the car takes care of these things.

define detailing

don't use a sponge! sheepskin mitts (or the LC mitts are pretty good too).

If you got it detailed (washed, clayed, polished) you could probably get rid of most of the water spots.

It will also provide a barrier to prevent them from occuring again (If maintained).

^+1.

generic term used for anything from vacuuming your seats or wiping the dash to fully compounding the car followed by LSP etc etc

The process of detailing that is going to remove swirls, water spots, and other imperfections is polishing your paint. This means you use a product with micro abrasives in it and you are evening out the dips and valleys (your swirls, scratches, water spots, etc.) in the clear coat. Prep work is just about everything when it comes to results in detailing. Prep work consists of two parts properly removing contamination from the surface (washing & drying process and using a clay bar on your paint) and properly removing imperfections from the clear coat (polishing).

To get the most out of the polishing process, consider investing in a Porter Cable 7424 Buffer. Compared to trying to remove imperfections by hand, it will save you time and energy, and best of all, give you significantly better results. To properly apply a polish you need to break down the abrasives in the polish so it finishes down the paint finer and finer. Cheaper buffers typically do not have enough power to break down the polishes effectively. Other buffers often have proprietary pads or proprietary backing plates that do not allow for an easy purchase of the proper pads.

When polishing with the Porter Cable, the Menzerna line of polishes is an excellent choice. They are some of the finest polishes available and do a great job removing surface imperfections while buffing down to a deep finish.

I realize this is a lot of information to digest, but take a look at our detailing guide to get a better understanding of what is happening to your clear coat during each step of the detailing process.

Do not hesitate to contact me with any questions you may have.

George