Not on a driver, or a 5 iron, or a pitch, chip or putt. They should always be rotating.
During a long back swing with extra arm swing, the shoulders stall before the transition. BAD! Trying to hold the lag will cause a stall and so will spine angle changes. Bad shoulder turn angles will also force you to stall. I know my shoulders often suffer a stall when I get stuck.
OK, that’s all sorts of hows and techno caca, but what can you do to help this?
The answer is finding a drill/feel that conquers the issue causing your shoulder stall and I have a really good one that will pretty much beat them all.
Hold a shaft cross armed in front of your chest and rotate your shoulders as much as your body will allow. Then drop the club and throw an upper cut to a chin out in front of you with your right hand driving your right shoulder all the way to where your left shoulder was at the top of the back swing.
Many of you throw roundhouse right hooks and even more of you throw right upper cuts to your own chins…LOL. Do both of those and you will say, “holy ****, that’s exactly what I do”
Do it in front of a mirror and you will see what awesome shoulder rotation this drill creates.