Most of the Civil War sites I have to search were hit heavily 10-15 years ago, but haven't been searched much in the intervening years because everybody assumes they've been hunted out. What detector would you choose to look for those deep targets that got missed? I'm fairly sure there are some deep targets that did get missed too. Money is no issue as I'll scrape together what it takes. However, if its a real heavy unit it needs to be chest or belt mountable and it would really help if the search coil is waterproof. Any ideas, suggestions?? I'm considering a Whites TDI, but I don't know what else would make for a successful specialized unit like this.