[popa_pescarul]

knot-doc sounds good! I've been called a knot-head before, I don't think it had anything to do with tying them though...

I expect there will be some differences with lighter lines. It might turn out that you'd be better off with one type of knot for a heavy line, another for a light line. It will be interesting to see what happens. I'll get around to testing that eventually.
Then there's comparing different brands of line...that should get some lively conversation going!