...throw the salt switch on check parallel to the water line,or in other wards check dry sand only,wet sand only..bring up the gain so it is not cattery,weight for the nice repeatable smooth beep all ways lift your loop over the target to get a size and dept report,and all ways turn an Cris cross your tar or get X it as they say.that alone will tell if the target is good by X ing it.because the number likes to change on the vdi, and if it hits hard here,pin points,over there it's probably a big peace of iron..all ways dig the low vdi's when their deep targeting, and when it sound like a C/J mode beep,and your in relic mod and it doesn't tell you any thing on the screen,and it's repeatable,and the pin pointing is just a low growl...dig... there some then there that is deep .I found a 21 pound piece of glacial float copper an at 3.35 cents a pound I did good on that one. I was on my belly digging arms reach like the the pros do.one thing i love about the mxt is the sound of the nice smooth beep in c/j mode.grunts and the chirp in the relic mode.and the zip zip,int prospecting mode..to many tones can be tiring some, I had to listen to one,I hope the mxt pro doesn't sound like a prizm 5 G. have fun with your new detector From White's. liftloop