I guess what im saying is. if anyone is going to spray tremclad. why not spray acyrilc urathane for the 50-80 bucks more you wont be disappointed.
I've said the same thing; there's no point spraying Tremclad - if you're gonna spray then you might as well use something good.
The one thing with urethanes is the isocyanates. Any curing-type urethane, whether clearcoat or single-stage colour, will emit this when airborne. Don't breathe that stuff. VERY bad.