Thanks Jrista for taking the time to give that very informative reply. It all makes sense, but initially a guy is swimming in a sea of information.
I almost only ever use center spot focus, other than for small birds flying quickly in the sky.
Thankfully by hook or crook a fair number of impressive shots come out of the process and it's virtually impossible to get discouraged. For those I miss, there is always something that to me is awesome. Of course my critical sense is rising and I'm more aware of the shortcomings but peoploe around me are still blown away by what I have to show. For birds and me it's mainly extreme patience and luck but I won't broadcast that too much.
Here's one from back in May.
6D 300F2.8 II 1000th F2.8 ISO 2000