spraying
I've sprayed my share of tremclad through my Binks automotive type spray gun, typically used between 30 - 40 lbs of pressure, but found that I liked to add a little reducer and/or hardener - I shot my Willys M38 jeep with a one part olive drab enamel, the pre-mixed canned paint doesnt seem to like to harden as much as automotive paint in the thin coats a spray gun lays down, but thinning it makes for a nicer finish and a little hardener helped. We shot my friends Peterborough a couple years ago and its held up very well, but it goes down best over grey primer. By the way its a regular siphon cup gun, an HVLP gun likely wont need the same pressure, but a couple of test runs would be great.
Just my own exprience...