I don't know if you have ever used Zolatone, but I have done it on both my G-3 and the Seafair Sedan. For what it is worth, I highly recommend using one of the older style "gravity fed" spray guns to apply it and NOT one of the HVLP pressure type spray guns. The HVLP guns DID NOT work well for me at all and they clog easily due to the Zolatone being fairly thick. I would also recommend at least a 2.4 nozzle on any gun you use Sir.
Anyway,....I hope that helps you some. Personally, I love the way
Zolatone looks on the Glasspar Boats.
Just did the Zolatone in my G3 this afternoon. Bought the product on line from AutoBody Tool Mart. Shot it on a little thick using my Gator Back auto insulation gun, think my GelCoat tip on my HVLP gun 2.2 mm would be better. Going to be doing my son's Seafair Seadan soon so will let you know.