Well, I am here today to attest to the fact that bias and ego can really affect a person's judgement. It is so easy to let it creep into your work. I've been through many trials and tribulations or what refer to as purgatory time over the receiver coil I'm trying to get right. Every time I think i have it right, after much testing if find some aspect that is just not good enough. My latest "find" is that the air loop coil I thought was so good turns out it just does not work well out on the edges of the search zone. I came up with my version of a Chinese proverb: "Man who pats self on the back ends up with broken arm."
Anyway, i went back through most on my designs trying to find "something". So now I'm back working on a spiral coil. i had tried one before and thought it was too weak, but it does work. So I need to work with it and find out more about it. I'm just so slow. I usually take a whole 24 hours to be able to analyse the results, and I wake up the next morning with an understanding. It's getting there but it sure is slow. Like they say "Love is patient."