|I'm just using hydrocarbon waxes and wax fast, so I didn't want to mess with the crayoning it in.
Actually, I find that you'll save a fair amount of time AND wax by crayoning it on before ironing, if you do it right. Heat up your iron, then just touch the wax to the iron's base for an instant, and crayon on one stroke with the soft, warmed wax. Repeat--touch the iron-rub-touch-rub--until you've covered the base with a very thin layer of wax. You'll use much less wax than dripping it on, and you'll cover the base more evenly, protecting the P-Tex while you iron in the wax.
When you've ironed it in sufficiently, hold a layer of lint-free paper towel or "Fiberlene" under the iron and make one smooth pass the full length of the ski. This will soak up excess wax, leaving a very smooth, very thin coat. I rarely even scrape after this step, unless the "perfect" wax job is critical (racing), saving even more time scraping and cleaning up wax shavings.
Like I said, it's actually quicker this way, once you get the hang of it, and you'll save wax and minimize the mess you have to clean up.