Crusader;... "I've never liked all-metal mode on the Tesoro's, but have always had the Disc below Iron & Ses as high as conditions allow. In my opinion, any Disc affects the depth & reliability, trust your ears & never trust the machine or any VDUs. I clear tons of rubbish (even knowing its rubbish), its how we detect, as we know next year its less to listen to. However, I'm quick, & you have to find the style that best suits you & the field. Flexibility with approach is the best way. I have detected a field which was full & I mean full of iron & iron nails. Every sweep was 10 signals across the whole field, I joke not. What most would do is pump up the Disc & cherry pick. What I did is left it in near all-metal & ignore the constant iron signals whilst picking out the higher tones that were all mixed up in the tune I was listening to. It takes concentration, but you are hearing everything & the decision is yours & not the machines. Take control icon_thumright Bells & whistles are for beginners & selling detectors, keep it simple!"
I've got the Vaquero on Super-Tune 100% of the time. Anything lower on my disc will only bring me med to small nails, etc. And I still get a few of those anyway. I don't cherry pick anymore, I dig everything that remotely gives a decent signal in at least one direction, and with the iffy's I clear the ground some to find an improvement. Most of my latest good finds were iffys I rejected when I was cherry picking the first time on the land. So I learned that lesson, I think...except if they sound long, then they are a wire or a nail. I'm digging consistently to 8-10 inches, but mos in the 3-6 inch range.
I'm still trying to comprehend sinkage over the years. The 1800 medallion I found yesterday was at the same depth, 6inches, in the same hole as a bottle cap, 1960's let's say. Why