Skyline or Splatt Brothers are both good fields IMHO. Skyline would be alot closer to Detroit though. Might also look into Hogsback if they're still open.
In West Virginia:
Not too many "organized" woodsball fields that I know of. Outlaw/private land games are the normal venue around here. I've driven by Scary Creek a good bit but, have never played there myself. Although, the fields there look like they could be quite fun. Reading their website and word of mouth has kept me away for now.