Genu! Yes its a all too common problem within this Sport! Invariably, Some "Know it all" shows up and tells you what you are doing wrong! Swinging coil too fast, too slow, too high, too low, not the right settings, wrong location, wrong digger and kneepads etc...
Sort of like having a free 'Hank Hill' evaluation! We have all had experiences and even neighbors like that!...You can turn this into a positive though...Once, the floor of my house was sagging, and it obviously needed somebody to go down into the underfloor spiderwebbery crawl space, jack up the joists, and shim everything up....
As I was about to commence on this project, had all my tools and gear, One of my 'Know it all' neighbors came over...said, "Whatcha Doing?" I said, "Well, my floor is sagging in the middle, so what I'm gonna do is take this shovel and dig out around underneath the outer foundation walls, and then the whole floor will settle out level!"
Of course he immediately took over the project, crawled under my house, jacked up the joists, shimmed them all in perfect!.....True story! Big work avoiding secret in Life is to never appear to be the smartest guy in the room with the solution...Theres a Genius out there for every Dummy!...The trick is to never be the Genius!....Nobody expects a whole lot out of a Dummy! Thats why we have elections, to give the Dummys some project to keep them occupied! The Geniuses have all the easy solutions on the nightly news!..
. He then kept going on about how he knows his stuff about prospecting because he owns several GPX 5000's and that he has found over $20k+ in nuggets at one of his leases (which may be true). 
