Not even going to try and read the whole thread. Legions explainations are pretty close to what I have come up with a few exceptions.
I did most of my skills testing on CND. By using existing claim markers left by other miners and by the process of elimination finding my own claims I have come up with a somewhat good idea of what they mean. I ran into another miner up there on my last trip and was chatting him about this and guided him right to a claim by they skills he got. Granted there needs to be something there to find in the first place and no amount of claims are going to turn you a profit if they are all VI on CND but increasing your hitrate can turn the odds in your favor. Time and place are also a factor but that is a whole other subject
Now....I think all skills when mining have directional and distance qualities. I believe we do not get skills on claims that are directly in our path with the exception of Perception and sometimes Mineral Sense(still working on this one) but for the most part all the other skills are saying "if you keep going N you aint going to find shit"
On CND I love getting Geology skill gains. When I get these I can find the claim more times than not. I have a pretty good hitrate with survey and prospecting gains too. Mineral Sense is very similar to Survey/Pros but the claim is closer.
Like Legion says, try it.
How would you explain globals with skills on drop if what I've highlighted is true?