Originally Posted by sophistrock
I am willing to switch to 2hbh as long as it can hind my eye problem and get me to another level.
Is it true people can hit a technically perfect 2hbh with open or neutral stance? At least the stance is not as rigid as 1hbh?
It's mainly about the shoulders.
If you try to restrict your shoulder turn on the 1hbh you're likely to lose power and control, and/or over-rotate to compensate for the short backswing.
As a last-ditch effort (that you may as well try), you may try hitting without closing your shoulders, and instead swing from neutral to semi-open shoulders making contact the same way Wawrinka does (semi-open). But note that even Wawrinka closes his shoulders on the backswing. You'll probably have to muscle the ball more, also.
Sadly, moving to a 2hbh may be your best option. You can hit the 2hbh both open and neutral, though neutral would probably be preferred if you had the time to set up. Agassi seemed to like to hit neutral and he did it very well.
With a 2hbh, you won't have to close your shoulders as much as the 1hbh on the backswing. Also, you will be opening your shoulders up more on the forward swing and will be making contact more to the left
of your body instead of your right. All this should help you get a better look at the incoming ball. Lastly, the later contact on the 2hbh will give you a split second more to adjust to misreads of the ball.
So even if you hit the 2hbh from a closed stance you're likely to get a better look with a 2hbh. And of course the two hands will allow you to further adjust to surprises.
You should probably start learning the 2hbh using a closed stance, then hit open and neutral shortly after. The easiest set up would probably be to keep your left arm straight and right arm bent. Be sure to transfer your weight fully forward on neutral/closed-stance shots, like you would with your 1hbh.