icall- I fully understand how the whole KSG thing can make for confusion, there are *so* many seemingly contradictory reports/opinions/experiences.
In *my* experience, the longer it sets up the easier it wipes off. I once applied KSG so thickly it was like a facetious example of waxing, a thick white coating...that's what I meant by "goofy thick". After three days it wiped off quite easily. That said, I prefer to use the extremely thin applications (*FAR* less than a nickel-size amount for any panel); I think of it as bonding at the molecular level. IMO it doesn't take much experience/effort to ensure adequate/uniform coverage with such small amounts, but what's easy for one person might not be for somebody else and I'm used to doing it this way. After dozens of applications (including the wheels on most of our vehicles), I'm still using the first bottle of it, which I bought around the time I moved into the current house in 2000, plenty left in it too, so that gives an idea of how little I use.
Regarding durability (no, the regulars don't need to worry that I'll rehash it all again), I did some experiments where I controlled every remotely relevant variable I could think of (and I'm confident that I didn't miss anything

). More layers lasted a *lot* longer for me than fewer layers, simple as that; and no, thicker/thinner layers didn't change the results. Anticipating another common concern: even if it takes several layers to ensure complete coverage and that I somehow failed to achieve said coverage until I'd applied a few (and BTW, the suggestion that I'd fail to consider such obvious stuff would be pretty insulting

), the results were still clear- more applications last longer, which I interpret as the result of layering- building up an increasingly thick film of KSG on the surface, a film I can even *feel*. Not saying that everyone's experience will mirror mine, but in my case the results were so blatantly obvious that I'd be foolish to discount them.
For me, putting about six layers of KSG on the minivan means that I won't have to re-LSP it for a long, long time even if I spot-clay at every wash; four-six layers on wheels last until I take them off to run the winter ones, so I always shoot for four-six thin layers when I'm using KSG.