Thanks, Folks.
I like the idea of U1 easing into a suitable position for both tags and PU moving up the line.
With PU moving back, it seems he's vulnerable to an unseen drop, ...but I guess the fans would let him know.
[This happened last night. With the sun setting in Right, and U1 with his back to R3 I found myself in a horrible position only a few (10') feet off the line extended fighting to see the catch.]
mick