First, I new here so hello and thank you for contributing to this forum. I just purchased my first detector and am excited to get started in this hobby. I bought an xterra 705 with the 8x5 18.75khz coil to go along with the standard 7.5khz round coil. I'm hoping to take some trips looking for gold over the summer, but I live in Texas so I was also looking for a general purpose detector for parks, beaches, dinking around. I'm thinking this setup gives me a pretty solid all arounder to get started.
I am wondering about the different coils for these things and how to get the most out of a singe detector. Obviously, the 8x5 will be my best option for small gold. My question is whether there would be a benefit to getting something like the 15" 3khz coil for larger or deeper gold? Would it be useful in this capacity? Would there be much difference from the stock 7.5 coil? I suppose I'm trying to ask if there's a way to get a VLF to work more like a PI detector. I'm guessing I also know the answer, but I'm asking anyway. What do you guys think? Useful or money better saved?