Yes, latex paints can be thinned with water and the finish works beautifully. Twenty years of field history bears this out.
Weather resistance is a moot point for our airplanes. How many aircraft that are lovingly crafted in our shops spend their days tied down outdoors? For all practical purposes....none. When you calculate the hours typically flown by the low-n-slow custom-built aircraft the exposure to UV during the course of a year is measured in tens of hours. A finish that was designed for thirty years exposure 24/7 to the elements is overkill for our application whether it is thinned, not thinned, rolled, brushed, or sprayed.
If you want to spray latex, Lowes's sells a latex spray gun under the Kobalt brand for less than $50. According to the presenter of the webinar that started this thread, it works like a charm.
http://www.lowes.com/pd_220964-47120...ductId=3401350
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