Well, having said how much I like the Z-Wings, now here’s the alternative. If you slow troll, there’s not a functional difference between a standard cannon ball and a Z-Wing, it’s as you increase speed that blow-back becomes an issue. We offer three downrigger weights in the standard cannon ball configuration, 8#, 10#, 12#. The weights are also coated. Another way to get around the blow-back problem is to use more weight, and slim down the surface area of the cannon ball. That’s the Master Slicer, a pancake shaped 13# hunk of lead, coated, and finned for better tracking. If you’re going to go with a standard weight, these are the best product out there. I know, I’ve been looking for the right supplier for some time now.