This was the closest forum to finding out anything about detector pro's pistol probe. Hands down, at six inch depth for coins this baby blows anything else away for under 200.00! the detector pro Uniprobe will also do 6" but it is much more expensive. My question: with no waterproof or water protection mentioned about the pistol probe, I would like to coat the shaft and head with a rubberized or silicone based tool dip product for water protection. Are there plastics/ materials that hinder pulse waves? Or reduce coil sensitivity? Say like with a coil cover...doe's any one know if a special plastic is used? I kinda doubt it, but I never know. I'm sure there are some materials that block pulse induction waves. If any one has any thoughts about waterproofing coils or probes, I'd love to hear it.