Well, I have entered the world of Walleye fishing and with the sage advice of Seth Burrill, the owner of AX Tackle (http://www.anglers-experience.com/catalog/) and producer of Angler's Xperience (http://www.anglers-experience.com/), I have made a series of crawler harnesses based on my Rapier Trout and Kokanee harnesses. And here are some of them....
Click on picture to enlarge.
I used 12# Stren Original line, a variety of #4 Colorado spinners, #4 Mustad Beak hooks (one black and one red), Czech Glass fire polished AB beads in "Ruby Red" (RR), "Olivine" (OL), and a combination of both colors with a gold/crystal rondelle spacer bead (wedding ring). The rig is 48" overall in length. I've also made a few using Viscious 12# Fluorocarbon line. The lead hooks are tied using a Snell or Palomar knot and the trailing hook is tied using a Palomar knot. There are 2 1/2" between the bottom of the lead hook and the top of the trailing hook. This spacing should accommodate a 5" or longer Nightcrawler, Robo worm, Magic worm or whatever your preference in baits might be might be.
Want to see them in person? Stop in at the AX Tackle Shop located in Roundy's Kawasaki at 11008 North Newport Hwy, Spokane, WA, Best Buy Surplus 2516 E. Sprague Ave., Spokane, WA and Bargain Hunter 16413 E. Sprague Ave., Spokane, WA.