My three boys have issued the old man a challenge and I have to say it sounds like fun. They want me to build a "moving zombie target" Any suggestions would be great. I have a back ground in Overhead Doors and metal fab. So building is not a problem, but I am drawing a blank on how to make the target "stagger" like a zombie would. If I can master this I will post the plans on here so everyone can have a zombie shoot!! or even come shoot at mine!! Thanks in advance guys!!!!