I also used Perfection to paint my Westsail 32. It is important to use a cleaning
solvent BEFORE any sanding
. Any contaminants that are on the surface (oil, wax, etc) will get imbedded into the hull material if you don't use the recommended solvent first. Like all painting jobs, exact prep work provides the best outcome.
Tape off you boot stripe and use a narrow roller. You can buy the foam rollers and cut them to length. HERE'S THE BEST ADVICE, WHEN YOU PUT SOME PAINT ON YOUR ROLLER, SQUEESE OUT AS MUCH OF IT YOU CAN BEFORE ROLLING IT ON THE BOAT. You can't put this stuff on THIN enough. Just a bit of over application of the paint will cause RUNS that cannot be tipped out.
You will also need the special solvent for mixing with the paint. Interlux
tells you all you need to know in their brochures. Lastly, as stated before, the tipper must use very light strokes with the brush at least 45 degree angle or more. You are not trying to apply the paint with the brush but only trying to take out the small bubbles that were left by the roller. The strokes are only in one direction, verticle or horizontal. If you put too much pressure with the brush, you will see ridge marks. It is a very, very soft contact method for the tipper. Once you have left an area and moved on, you cannot come back to touch up runs or errors. The second coat will take care of those problems.
I did my entire boat hull in less than two hours. The paint dries overnight and a light sanding
with 280 grit paper followed by a light cleaning
with the solvent and you are ready for the next coat.