OK ! I've been holding back on this conversation, mostly because I'm not that good at finishing !
Today I put two coats of Varithane's Spar Urethane, on CF Nokomis.
The reason I choose Varithane, was the directions on the can, didn't recommend sanding between coats.
I have a bunch of Helmsman's Spar Urethane, and it did recommend sanding.
The Varithane did seem thicker, than Helmsman's.
Technic ? I start at one end, work from the keel down, with a 3"foam brush. Tip off, going wet to dry, or in my case, left to right.
.Then just work around the hull until, I'm back where I started. I'm done.
Jumping from side to side every 2' or so would have me stirring up too much dust.
I don't worry about the overlap in the middle. May be why my boats finishes don't knock your socks off.
Once my hulls hit this nasty Iowa river water, it really doesn't matter !
Jim