I like Minwax® Helmsman® Spar Urethane (Clear Gloss)
I've had Helmsman on one boat for 6 years and will revarnish this spring.
Minwax® Helmsman® Spar Urethane (Clear Gloss)You can buy this everywhere and the prices run between $4 on sale to $11 a quart, with $7 being about average. (This was in 2000). Shipping would cost that much alone for varnish by mail. Some of the true varnishers using Captains, etc. don’t think Minwax Helmsman give quite the shine and I don’t have anything to compare mine to, but the shine looks pretty good to me. When you add in the availability, cheap cost and quick drying time, made it a compelling buy for me.
Varnishing was a real mystery to me so while I was building my boat I was watching the kayak building bulletin board for tips on varnishing from the different members. I put several of their ideas together that worked for me without having any varnishing experience. I used a MinWax polyurethane varnish that dried in 4 to 6 hours, so I could get a complete coat on in a day, hull and deck, and one day I did two coats with no sanding between coats. I had 7 total coats. I use Rehd’s method of hand wiping, which went on very fast and easy and virtually eliminated runs. About 15 minutes wiping time. I use Bounty paper towels dipped in the varnish which didn’t tear up and leave a residue. I use Rob Mack’s idea of not using above 220 wet grit sandpaper between sandings. That give a mechanical bond to the last layer of varnish and knocked off any high places in the varnish, yet I didn’t spend a lot of time doing needless sanding. The last coat was Rob Mack’s use of a foam brush to get a thicker last coat and then tipped of with that brush to eliminate runs and bubbles. I wore throw-a-way rubber gloves so there was never a mess from the hand wiping of the varnish. This system worked out well for me.
John