I have had great success with Interlux 244 sanding sealer followed by
Rust-Oleum enamel. The "magic" in Rust-Oleum is in their primers, beyond
that they are simply a very, very good fish oil based enamel with which
you can get great results by using a good brush and brushing the paint
our properly.

The 244 sanding sealer fills the grain in the wood and small
imperfections. Spread it on with a brush, heavily, sand it smooth again
and paint.

Good luck

Jonathan

Ron Wierszewski wrote:
Ten years ago I built a Bolger designed sailboat...the "Teal". I did this
while working 6 days a weeks..often 10hrs/day. Before painting the hull with
System Three products, (WR-155 primer, WR-LPU Topcoat) I tested the
materials on a small movable seat that fits in the boat. I could not get a
uniform, sagfree finish, using a brush. I gave up the project in disgust.
Now retired , Im back at it again. I'm looking for ideas on what I should
use now, nothing exotic, a one part paint, that will hold up on a bare
plywood surface. This boat will be stored in my garage...seldom in the
water. Thanks in advance. Ron