Thanks for your input. The photo probably was taken from further back and then cropped, but I wanted to direct comments to that aspect of the approach to the pool.
It was not necessary to take a knee much that day. The first cast to a pool like this would have been made so that most of the line landed on the cobble and only the leader or mostly leader only landed on fishable areas.
Shadows were not a problem because of the canopy, except for in a few areas of partial clearing.
As for speculation on where best to drop the fly, there was little need to worry about that. But the suggestions made were all delicious food for thought.
In a different pool, I was positioned on the left shore, downstream and was convinced the pool-boss would be positioned on or near the right bank mid-pool. I plopped my fly on the right-hand side of the deepest part and the pool boss charged it from 5 feet away from a holding position I could only assume was on the far left bank.
I did not actually fish the pictured pool as the beauty in the blue bikini was camped there for almost an hour. After sitting and watching for a while, I snapped a couple photos (the one with her and the one without her) and moved on up the stream.