Glad you're happy with the results. It certainly looks like it nailed focus.
Now, we all need longer lenses again!
Yeah, every shot was pretty much as sharp as they come with the 135. I struggled a bit with the MA, my FoCal software said -9, but I had it at -7 before and went back and forth on those, ending up on the last shots at -8. Came home and calibrated again with way longer distance to target, and ended up with -8
The diffcult thing was to keep the surfer focused when the waves came up between me and the surfer. I couldn't use Case 2 as this would lead to a lot of OOF pictures. I backed down the auto switch, as mentioned, and it helped a great deal.
Any other hints for both tracking erradic movement AND ignoring subjects that momentarely block my subject? I used 8 pt surrounding, and I must say, it worked way better than anything I have ever tried (I had a 5d3 and 1d4)