How to get Distance

[Downthemiddle]

Here we go,

1) using a week grip.
2) left arm is long and straight. (check this in a mirror).
3) hitting a nice high slight draw.
4) 7 iron will only go 130yds.(this is the landing spot).
5) Hitting the ball in the sweet spot.

How can i get my 7 iron to 140yds.

Where does the left hip rotate during the swing?

I'm having fun using this system. Can score too , scoring rounds 78 thru 83
But it is not fun when you have 5 iron at 150yds.

I do believe i can get better distance.

What could i be missing? I don't want to have to swing out of my shoes.

Any help would be appreciated thanks.