I tied a few, before running into a problem with my left hand. I have been noodling around with a guitar which is what I think caused it. Actually had my hand "lock up" tying blood knots, specifically that muscle controls your pinky abductor digiti minimus. This goes back a couple months and it's still bugging me. My hand actually starts pulsing where you can see the muscle spasming like an alien is going to spring out.. That happens out of the blue. It pretty freaky.
I don't find the blood knot tough, especially with a jig I made. I think it's hard to get the spacing right. I casted one I made and it laid out a bug just fine. The first knot is gigantic, I can guarantee it would be a nightmare in the Kank in floating weeds, but again anything is.
I think I am going to try the Rob suggestion.