I save my broken shroom heads for neko rig as well. Another tip is heating up nail weight with lighter will get the nail weight in the zman plastic. Do you find hookups better with hook down the bait, towards weight? I always rigged hook up opposite of the weighed end.
Im sold. Caught dozens of fish in a couple trips using neko rigged bangstickz in fairly pressured lakes. You do catch a lot of little guys as well but I will take that every time. Ran out of Z man weights but was able to get the VMC half moon weights to work as well.