Josh Alwine here. Author of High Percentage Fishing. The ShareLunker data was just a small drop in the bucket of the overall data I looked at. I wrote that book over three years ago, so I'd have to pull up the old files to tell you the exact number, but as I recall the ShareLunker data was something like 600 data points compared to the whole sample set that was over 40,000 catches. The rest of the data came from clubs, and other sources like the Toledo Bend lunker club. Data points were from all over the country as well. I won't bore you with the a bunch of statistical jargon, but with a sample set that size you can reliably draw some really powerful conclusions.
All my data was adjusted for angling effort. By far and away, the most fish are caught on the weekends. However that's when the vast majority of people are fishing, so angling effort is also at it's highest. In terms of fish caught per angling hour though, weekends are actually the worst time to fish. If you are looking at the number of fish caught per angling hour, Wednesdays are the best day. The basic thesis of my book is that when you normalize all the data and then take all the variables into account, fishing pressure turns out to be the single biggest factor when it comes to the catch rates (fish caught per angling hour). In all but the most extreme cases it matters more than barometric pressure, lunar phase, cloud cover, etc... Anyway, that's the short version, I wrote a whole book on it if you are looking for more detail! Tight lines gents.