Don't do yet another how-to. Everyone who has caught a 40#er thinks they are an expert has written a how to book. As far as spots go...go ahead and talk about them. IMO spot burning is posting online that "I got 6 bass to 28# last night at Jim's Rock...you can park at pole number 47 after 9:00pm because they don't check...and oh yeah I got all the fish on chicken scratch bombers."
All spots have been discovered. Disclosing up to the minute fishing conditions are most of the problem IMO.
The problem with fishing books is to get them published you need mass appeal. Now how-to addresses that but IMO that song is played out. Enough with the how to. Unfortunately, the mass audience today likes dirt, scandal, sex, etc. I was disappointed with a recent book I read because I think the publisher had serious influence on the story line and the book concentrated way too much on the few negatives, only because it would be more appealing to masses. When in fact the positive aspects of the story would have been more accurate and appealing to me.
TO be honest, I like reading books like surf casters quest rather than how-to's. I like reading about what it was like back then in those old scribners articles and wishing I was there, but that is me. I think you could write a book on the history of needlefish but besides us fanatics, who would buy it?
I like your style. I think it stands on it's own. go with your heart, don't try to emulate others or reshape things to publishers whims who don't get it.