I had the occasion to put in about 20 hours on a 113 year old fairgrounds with the F75 while vacationing up in Minnesota last week. I actually have been hunting this old grounds for close to 20 year's while vacationing up there annually, having used several detectors including a couple of cz's, but in recent year's it had began to become kind of frugal. The site is definately trashy and many of the targets are now quite deep. (7-12") GB was usually 72-78 with .03 to .3 showing on the feo scale, as the norm. Although I tried different settings, I pretty much settled in on sen. 75, disc. 5, de process and 2f tones. (I don't use notch) All in all, I recovered 3 IH cents, 7 silver coins, 2 Wash. quarters, 3 Merc. and 2 Rosie dimes, 19 wheat cents, 1 Buffalo nickel and a yet to be determined foreign coin, plus $4.57 in clad. The small coil found 2 of the IH cents, 3 dimes and 1 quarter. Both IH's were 6-7" as was one of the dimes. My deepest find was with the large dd coil. It hit a quarter at 12" and id'ed 83-84. The IH's id'ed from 57-63. Thanks for reading, HH jim tn