If the tee box is open and the hole is open, we’re going.
Your proper position on the golf course is directly behind the group in front of you, not directly in front of the group behind you. And certainly not in the grill while the group behind you waits on your sorry ass!
Why are guests sent out ahead of members? I’m assuming it’s some kind of daily fee course that also offers a membership option?
It's closer to 15% if we control for dynamic loft, because the "pre-set drill" doesn't really let me hit anything longer than about a 6I and get the ball up in the air enough to control landing angle well enough, etc.
As I wrote, a good chunk of the distance that would be lost (beyond the 10%) is due to the "more than optimal" amount of lag or shaft lean.
There's a difference between one player giving up yardage to another player and giving up yardage to himself. I can say without a shadow of a doubt that if Jim Furyk gave up 10%, he'd plummet down the OWGR pretty quickly.
You're continuing to rationalize here, but you're really not saying anything differently now than what has already been said: the JV swing can get someone to a level of "competency" a bit quicker, but it has a lower ceiling.