Two problems on the tee shot

[Adumb]

1) Right elbow bend. I took lessons from a golf pro at a driving range a year ago and he said to open up my swing, meaning, keep both arms straight. But I wonder, what's the consensus on this? Shouldn't the right elbow be tucked until impact? When I got into the habit of "opening up" my swing I starting hooking golf balls right and left. Well not right and left...just left. Just for the record, the golf pro sucked...I could outdrive him. So what's better a tucked right elbow or straight?

2) Losing balance on the tee shot. After my follow through all of my weight is on my left foot but then I end up with a leftward lean. Meaning I'll instinctively have to take a step with my right foot on the other side of my left foot (looks like I cross my feet for a sec while regaining balance). What's a common cause of this problem?

Thanks for the help!

[bjw181]

1) Right elbow bend. I took lessons from a golf pro at a driving range a year ago and he said to open up my swing, meaning, keep both arms straight. But I wonder, what's the consensus on this? Shouldn't the right elbow be tucked until impact? When I got into the habit of "opening up" my swing I starting hooking golf balls right and left. Well not right and left...just left. Just for the record, the golf pro sucked...I could outdrive him. So what's better a tucked right elbow or straight?

1) Your right arm always bends at the top of the swing, like carrying a server's tray. I think your pro just wants to widen your swing by keeping the left arm straight for a longer time in the back swing.

2) Turn through the shot. You are probably swaying your hips instead of turning them.