Fantastic OP as well as follow ups. Some of your best work ever on this board. One thing to keep in mind when talking about sacks is that sometimes when evaluating QBs you have to see them going down as a good thing.If its a coverage sack & there is simply nothing there(situationally speaking of course) that's likely the right decision rather than try to force something into traffic. Needless to say a high sack total begs for a closer look at the very least. There is certainly an instinctual component to finding a great pocket climber, but there are ways to optimize players w. a partial tool set in that dept. Are they at the very least one or more of the following: A. Hard to bring down due to balance or size B. Plus fluid movement in drop backs as well as on the run C. Extremely quick release D. MISC- Maybe they are better moving/climbing to one side than the other. Again, you can alter blocking schemes to cater to that. Maybe their surrounding cast was so deplorable the whole thing was an enigma. So on & so forth. You're largely looking for tools to work w. if it isn't the total package.Attributes that can either be coached up and/or harnessed. Pocket presence is a bit of an art form; There is no mechanical way of teaching or executing. What can be controlled is the scheme as well as the player figuring out the best way for him to be consistently effective using his specific skill set.