Glenn... a walleye is what you fish for after you have grown up....
And, now, for you reading enjoyment.... deep water trolling 20+' requires getting lures to run that deep...
Leadcore is nylon brauded line like chinese handcuffs with a thin lead core (hence "leadcore"....LOL)... the line is colored a different color every ten yards... And trolled at about 1.2-1.5mph it will sink approximately 5 feet for every ten yards... That coupled with the dive curve of the various lures.... ie. 15' with 45 feet of line out... means that you can create setups with three and five colors spooled with 30feet of mono after the leadcore and then look at the results... 30 feet of mono with "X" lure then three colors (ninety feet) of lead core and 15' of mono after the planer board gets you down 30'.... two more colors on another setup would get you down 40'....
There is a book, we refer to as the "trolling bible" The Precision Trolling Book that gives you the dive curves of almost every lure we use.... 45' of mono on a #8 Shad Rap at 1.2 mph will dive to 28'... etc... charts after charts...
Walleyes suspend under big clouds of baitfish in open water (Erie, Green Bay, Winnebago...etc.) So after you mark them on a graph and determine they are suspended at 25' you want to troll your baits at that depth... actually you should trol 4 or so baits at slightly different depths till you determine the best...
Now you see why we laugh when we hear you guys discuss whether "june bug" or "watermelon" is a better trailer on a jig head.... Two of go out we may have thrity rigged rods ready to go.... I buy crankbaits in sets of six of each color and carry about 1500 in the truck...
That's segmented leadcore.... we also use it with all ten colors spooled on reels... on 10-12' rods....
Come to walleye U sometime.... Oh, and BTW, walleye have teeth so don't try to lip 'em...:wacko: