I have been swinging a coil for many a year but still have lots of learning to do. I have a friend that I hunt with. We each use Whites. We each use 5.3 coils. 99% of the time he gets double or more finds than me and he is a ring killer. He is younger so he hears better? Yes but most of our finds ore 5" or less, so better hearing would only account for some. However I suspect I am just not on top of as many signals. Sometimes he will call me over to share a signal and it shows same as his. All else being equal, would a 8" coil be better for me? I am happy with my depth, Maybe I just need to cover more ground.