Hit a 1700's site in New Hampshire with a Whites IDX....I have never been able to metal detect in NH in Jan due to a couple feet of snow and artic chill in the past 10 years....well this year I can.....the fields and grassy areas are frozen solid. But you can dig in the woods for the most part with some effort.....Dug two nice older buttons and a bunch of busted Relics. And it was 40 degrees.....there is only 3 to 4 inches of snow so targets can still be heard. I pumped the sensitivity all the way and ran no disc. And dug everything above iron.