Been wrapping them with .020 lead all along. I'm getting a good sink rate. I went from the bathroom sink to a fairly clear lake (for Illinois) and counted as I watched them drop a few feet in front of me. I was suprised at the difference in rates between some of my ties. All had roughly the same amount of lead, but varying materials seemed to have made quite a difference too. And of course I had a couple that were tied with bead heads and lead- I kinda had to be careful not to drag a trench in the bottom of the lake with them . Luke