I don't keep track of the hours I detect. I'm sure I would be very disapointed in my "Pay" rate. Especially if I deduct Batteries and Gas. This years good finds.... 16 Silver coins, Washington quarters, Merc & rosie dimes. 1907 V nickel 20" 14K gold chain Lots of clad, about $350 worth?
I own one metal detector, a store brand model from an old catalog showroom called "Century". it has two knobs and no discrimination. It is from around 1966, so it is probably worth more as a collectable than as a detector. I find a LOT of aluminum with it. I mostly use it to try to find nails and metal in saw logs.