Thanks for all of your responses. I purchased a German made cabinet scraper (Two Cherries brand) at a local woodcraft supply store and used it to shape my deck and shear seams last weekend. For such a primative tool, the cabinet scraper is a very hard item to find, but very rewarding to use. I think my favorite moments building my Artic Tern have come during the seam shaping process using the cabinet scraper.

Paul, Port Orchard