Tex, I'd use a surgeon's loop. It's well over 90% strong. The perfection is appreciably less - if you were tying it in heavy butt section, even then it's much stronger than tippet. But tied in 10-12 lb tippet, it becomes a very weak link.

Kent [url=http://www.flyfishga.com:24b02]www.flyfishga.com[/url:24b02]