We use leadfish for jigging up here.. They are lead molded in the shape of fish and then hot dipped into copper or brass. Some are silver though but we find the copper or brass works best. They are quite heavey and drop in rather no time at all. We like to bounce them right off the bottom though. Using a small piece of cutbait trailing on back of them.. A freind of mine caught one that was 49 inches 2 seasons ago and I lost one last season prolly 20-25 lbs. I did bring up a nice one that was around 8 pounds though. We are fishing in 45 feet of water but threw the ice. We also like to fish for them at 25 feet as well. Most of our fishing for lakers is around under water ledges and shoals. Good Luck to you..