[Bushwacker]

I ordered a quart of primer and white Revolution 1000 from Supermarine, painted some PVC board samples and put them in a canal off ICW for a month. Did same with a Signature sample, as I wanted to see if, unlike other urethanes (Awlgrip, Imron or Perfection, etc.), either of them were suitable for use as bottom paints on trailer boat. They both did fine with no blisters or peeling; although neither one is antifouling, for some reason the Signature accumulated less marine growth, and what was there easily scrubbed off while still wet.

Decided to go with the Signature. The Revolution is very slow to cure; I could still dent it with a fingernail after a week. It cures by oxygen, so if applied too thick, that aggravates the curing problem. I did 5 samples with 2 THIN coats of the Revolution, using wet roller, wet roller/dry roller, roll & tip with foam brush, foam brush, and bristle brush. All had been primed with their primer, and all failed the fingernail dent test after a week. I tried both the Supermarine thinner (xylene) and mineral spirits, and the paint didn't flow out nearly as well as advertized, and virtually none of the roller bubbles or brush strokes disappeared with 10-15% thinner. More thinner would probably have helped, but I didn't try that because with some paints, too much thinner screws up the chemistry. Since main purpose of the test was to see if it held up underwater, I didn't want to compromise the test results by screwing up the chemistry!

Bottom line is that both paints seem to work underwater, but the slow curing of the Revolution was a turn off for me. I want to start using the boat as soon as I finish painting and don't want to wait weeks for it to cure. I've used Signature for the bootstripe and it's tough as nails after about a week, plus it's easily repairable. I did not use the hardener that they offer as an option for the Revolution paint, as it's fairly expensive. However the Revolution is still considerably cheaper than Signature and may be a viable paint if used with the hardener.