I have a couple buddies that are very successful pocket miners, they are in need of a special coil to attach to the gold bug 2 detecting, actually belt mount the gold bug 2 and use just a hand wand handle with a 2.5-3" round coil attached, so what I need is someone to build and properly tune a 2.5"-3" round coil for the gold bug 2. This will be used to trace veins, chase gold laden veins, etc. They do this now but with the entire detector on shaft with the 6.5" coil, can get clumsy fast in narrow uneven areas, a much smaller coil will free them up a lot to hunt in tighter areas in pits they are mining. I am sure once built these coils would find a ready market for others that do pocket mining and chase veins of quartz for gold, there are plenty of gold bug 2's out there thats for sure. My buddies have checked out a small hand held unit on the market now but its coil is too small, very little depth, no coverage, and no variable sounds for determining size of targets. My friends would be more than willing to test a prototype and give technical results. How about it Dave J.????