A couple tips that took me awhile to absorb:
- Start on the hull. This allows for practice before the more obvious deck work.
- Taping along the shear leaves a clean line to work from the hull to deck. Typical masking tape worked fine.
- Thin the varnish. I added a cap of thinner to about a cup of varnish. This dramatically improved the flow.
- Use quality foam brushes. Wooster makes a good 3" one. Smooth and no hairs in the finish.
- Lay on the varnish parallel to the keel down to shear. The stroke perpendicular to the keel down to the shear and finally stroke parallel again into the previously wet area. This helps level the coat and eliminate runs. Stick with 12" - 18" length portions to avoid having the finish skin over.
- Allowing the varnish 24hrs to dry helps harden it enough for light sanding.