NavList:

I hadn't even considered wave height.  One of my future (ie, ain't gonna ever happen) projects would be to run multiple iterations of a sight reduction program, a round of say 4 or 5 well placed objects, and just increment the dip by 1 foot each round to see if the fix closes in on the real height of eye.  

The odd thing I've noticed since recently trying to get back into taking sights is how similar snagging just the right time to "mark" is to deciding when to actually pull the trigger in shooting a target rifle.  It seems to become less of a physical thing and more of a feeling.  Probably becomes second nature.... I used to shoot probably a dozen shots a day while at sea and never gave it a thought.   

Jim