Well, contrary to what BillNorth has posted, I've used water in both applying
and removal.

Like I said, there are many different techniques to using Klasse. It is fairly common though, to use water to assist removal.
I followed Jimwh's instructions for AIO (did it twice) since I applied it right over a workover with SMR. Then I went my own way and poured some SG into a tiny 1 oz squirt bottle to meter my consumption and make it easier to apply on a foam pad. I experimented with using QD as a lube (as suggested by CMA) but ditched that because there was a danger of mistaking dried SG with dried QD. Since my car is silver it would be very hard to see it to check for coverage already. I used simple water instead. I would take my foam pad, lightly mist it with some water, then "scrub" on a few thin lines of SG on the top 1/3 of the pad. Then I would dab the pad on the paint in a couple nearby areas and start applying. This took some experience to get good at it, but soon I figured out how much water mist I needed and how much SG I needed to cover a certain (small) area. Be very sparing with the water mist. I found that you could basically dilute the SG with water this way and apply it so thin that you had to fog it up with your breath to see it. This made me feel good because a lot of older advice I'd dug up basically said that if you could see the SG, it's too much. I applied 5 more ultra-thin coats this way and know I actually did apply something because I was running a 1/2 and 1/2 hood test at the same time, and noticed the 6 coat side was subtly darker (the famous Klasse "tinting" effect). A lot of this technique was ironicaly inspired by Zaino users.
In removal I did a modification of the "two towel" technique and just used one towel and my handy water mister. I would mist a section of a panel, wipe it down with the towel, then flip the towel over to the dry side and give it a final drying buff. I felt I could get away with this because my coats were so thin they weren't all that hard to remove. I checked for complete removal by fogging up the paint with my breath again. The fully buffed out areas did not look streaky. I didn't do this for the
whole car of course, but just a spot check here and there to ensure I was buffing it well enough. By the way, I had let it dry for an hour or more (depending on my schedule) and decided to follow the "24 hour cure" rule between coats.
Even though my car is silver and very forgiving, I'm sure I have no hazing. I had a theory once that incomplete removal on a microscopic level might result in the haze, but I think another member tried it and still had trouble. The hazing problem is still a mystery as to why it happens.
Having said all this I'm pretty sure I took a definitely "orginal" approach to all this and few do it this way. In retrospect it was probably kinda risky for a newbie, but it worked! I searched for hours on various tips and personal techniques for applying Klasse, and there seem to be very few rules. If you want to play it safe though, follow Bill's advice and use no water for anything.
HTH
