I usually use about 4 (or 5) layers of UTEE. And I actually use versamark between each layer - I can't move fast enough to get the UTEE on the hot piece fast enough to stick. Doing this allows me to focus my versamark on the outside edges to get a little more even coating.
Then when I put the piece in the freezer it curls up tremendously. I just crack it to straighten in out - a few bends east-west, and a few north-south, KWIM???
Here's are a couple samples from my gallery.
Gallery at Splitcoaststampers
Gallery at Splitcoaststampers