One day I'll get around to actually trying more than one or two settings out! I have done very well with the HF coil either running 28k or 74k. I basically use the Deus fast mode and just dig. And dig. And dig. I hardly ever go to sites that have a lot of trash. Good for me. The last three big iron pieces were ancient keepers, a big colonial handle and a cannon ball and grape shot. I'll have to try more of the programs out, but right now, not enough time and too many sites! I was at a beach today looking for driftwood and the stupid environmentalist company had picked it up to go burn it! Got some coins, nothing to go goofy about, but no one has been there in months, so not too bad.