Hi John,
Some of my hunting buddies tell me I look like I'm swinging a $&%# GOLF CLUB hunting with the Compadre.... <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol"> You can actually swing it fast and low in alot of areas, but if you didn't, it would take you forever to cover any ground with the little 4 inch coil. When the trash is really thick though, I usually slow down and listen closely for coins right up next to the trash. Day before yesterday I dug a couple of 40s wheat cents in an area littered with aluminum bottle caps. The wheats were at close to 6 inches deep, while the caps were all within the top inch or two. There was alot of other junk too, but the bottle caps are usually the hardest to deal with.
The Silver should actually give you a little more depth and sensitivity than the Compadre when both are equipped with the 4 inch coil.... different circuitry between the two machines....but that can be an advantage OR disadvantage, depending on several factors. The Compadre also has the 180 degree discrimination that lets you accept all targets down into the iron range, but with either machine, you can max out the discrimination and still accept clad coins, most copper cents, and silver. The Compadre w/4inch can get coins in the 5 to 6 inch range, depending on ground mineralization, and like the Silver, is internally "pre-set" to deal with most ground conditions pretty well. Neither is going to be a "depth demon" using the 4 inch coil, but that is not really the intended purposed of this kind of set up. But I'm of the same belief as most experienced coin hunters that there are many more coins hidden due to trash masking than due to depth, though the old ones "might" tend to be deeper, again depending on your hunting area. Around here, it's nothing unusual to dig silver and indian cents at 2 or 3 inches because of the ground matrix. Not all old coins are necessarily "deep".
For the high trash areas you describe, I would strongly recommend the 4 inch coil. I don't think you'll be disappointed. It's one of Tesoro's best kept secrets...... <img src="/metal/html/wink.gif" border=0 width=15 height=15 alt="
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Ralph