The reason for the coating was for salt prevention mainly.
This past weekend I dumped a black can of Rustoleum Industrial spray under it wherever I saw the brown.
I use Salt Away dilution in a 1 gallon sprayer in winter to pre-treat it before a rinse-less wash .

So anyway....before coating you need virgin paint. The easiest way is to polish the car.
This works to rid the swirls and remove the sealant at the same time.

So be happy with the way it looks before coating. I didn't get too carried away.
I used M205 with white Lake country pads followed by Menzerna SF4500(new # is 3800) on a black LC pads.
You can rip the pads of the DA and use by hand for the tight areas or use a yellow wax applicator.

Then I wiped it down with Griots paint prep followed by a Car Pro Eraser wipe down. I didn't have any Optimum Paint prep at the time but that is what I would prefer.
2X's worked for me but next time I will do 3. After 16 hours I was anxious.

You need to use a lot of Microfibers in the wipe down stage to make sure the paint is CLEAN, so make sure you have some good ones.
In a pinch the Costco yellows will do but some from the Rag Company would be ideal.
Wearing latex gloves is a must to prevent oils from the skin transferring.

I haven't used the blue applicator that comes with Gloss Coat yet and have done 3 cars. The Guz reassured me it wasn't wasting any product compared to using a micro suede wrapped around a Car Pro block(the more traditional way)

You just put a few lines on the end of the blue pad to prime and start. After that it is a few drops or drizzle.
You can tell when the sponge needs a squirt because of the coverage.

Here is Mikes (The Guz) newest write up. He does it up good.

http://www.autogeekonline.net/forum/...loss-coat.html

There is a write up on the Detailed Image by Zach McGovern that shows how easy it is but the site isn't working right now.

Application is the easiest part, just like anything else it's in the prep.

Amazon has the 20cc from Detail King for around 86(if you are doing 2 cars). I bought from them and they are quick.
They didn't have the Optimum paint prep last time I looked for it but they have Car Pro Eraser which works great.

Depending on what you have for micro fibers there is some deals there from the Rag Co.
Don't buy any microfibers from Chemical Guys they are junk.

A bottle of Opti-seal would be nice for after it's coated. I ordered the 3 pack last time.
The stuff is stupidly simple to use with phenomenal results. You can spray it on everything.

Let me know if you have any questions.
Hopefully the Guz pipes in.