Went relic hunting today and I have NEVER dug deeper holes than I did with the 10x12 SEF. I dug an old fork at about 13", miniballs at 9-11", etc. Don't have pictures yet, but I was finding some really deep stuff.
I tried out the 15x12 SEF and although I'm sure it would go even deeper, it's weight quickly became an issue for me. Very heavy coil. My arm and back are sore and I was using the 10x12 SEF 95% of the day. I couldn't imagine how I'd be feeling right now if I kept the big coil on all day. I think I'm going to return the coil instead of getting a swingy thingy. It didn't separate the targets out as nicely as I liked, and I would only use it in really clean areas, and there aren't too many of them around the areas I detect. The 10x12 was getting PLENTY of depth and I don't know if I would want it to go any deeper.
I tried out the 15x12 SEF and although I'm sure it would go even deeper, it's weight quickly became an issue for me. Very heavy coil. My arm and back are sore and I was using the 10x12 SEF 95% of the day. I couldn't imagine how I'd be feeling right now if I kept the big coil on all day. I think I'm going to return the coil instead of getting a swingy thingy. It didn't separate the targets out as nicely as I liked, and I would only use it in really clean areas, and there aren't too many of them around the areas I detect. The 10x12 was getting PLENTY of depth and I don't know if I would want it to go any deeper.