I bet if Pfizer made the yearly flu vaccine, it wouldn't be as good as COVID vaccine. It has more to do with that the typical flu is a dumbed down version of the original, and we have no clue what strand we will get.
is there a preferred amount of hip rotation in the backswing?
I have been taught 45 degrees (and then another 45 degrees in shoulder turn => 90 degrees in total), but I can't really see why.
I guess there may be a risk getting the club too far behind you, but otherwise?
I experimented a bit, and I can do more than 45, in spite of my age
And it makes it easier to get inside-out and avoid over-the-top. But maybe that's correcting a fault with another?
I still have the clubhead speed to hit a 3 iron cleanly, but it isn't as consistent as I want it to be. I have now dropped the 3 and 4 iron and replaced them with a 4 hybrid. There is a bit of a gap between my 4 hybrid and 5 iron, but overall I am happier. Another of my regular four ball has a 7 wood, and finds it to be his most consistent club and gets him out of troublesome lies.
You have definitely done a good thing. Though dropping the hybrid is more debatable, but if the wood is more consistent, go with it