Waterways and creeks often run in behind shopping centers or through neighborhoods. If you can find some spots with heavy brush/snags or rock those types of places usually hold crawdads. I don't know if you have any farmland close by, but the silty drainage ditches that run through wheat fields and such are usually my favorite spots. Look for the tell-tale chimneys they make in the mud. I use whole bluegill in my traps, filleted down to the tail on both sides, but still all attached. To tie bait in my traps I use single strand coated copper wire. Most of the time I just use a dip net with fine mesh, especially in agricultural drainage ditches. The part of the net that drags bottom all the time wears out quickly, so I sew on some double thick denim or something on the frame of the net to protect it. I sew it on with braided fishing line that I save when respooling. Hope this helps! Good luck!
A country boy can survive!