Good work finding and using the Beach mode for the mud. That's exactly what it's there for. You might also want to try, after swinging a few swings, locking the ground tracking by hitting the Track button after it's learned the soil a bit and ground balanced. This is awesome if you happen to be searching in fairly stable soil. If you are dealing with mineralized soil and soil that is constantly changing, constant tracking helps but if you lock it you can get a more able machine in "friendly" soil. I was getting lots of odd chirps and stuff until I discovered that the tracking was unnecessary in the soil I was in. Everything became more stable and only then was I able to "see" more targets, not tracking anomalies. As for depth, I know what you mean about mentioning it in the forums. It's an easy target for armchair detectorists! My Fisher CZ5 is a deep seeker to be sure, but even with 2 frequencies, with a concentric coil, the TreasurePro is quite able and is quickly proving itself to be just as able a machine! At 1/4 of the weight! I am easily digging targets at 5"-7" and for coins and jewelry, rarely do those items sink much deeper. in OK we have a clay layer that generally starts at around 6"-9" down. Most items stop there. My best stuff, gold rings, silver rings and other treasure has never been been below that. Only rarely do I come upon deep targets. Sandy areas around our lakes and rivers do allow for deeper sinking but I rarely search those spots. I know I should though. I'm working on it! There's gold in that there sandy spots!