Hi Nate,

When I was struggling with inconsistent contact a big part of it was a result of my head moving during my swing. As it has been explained to me, head movement can shift the bottom of your swing arc which creates the inconsistency with ball striking that results in both fat and thin shots. What works for me is focusing on keeping my head as my center and turning around that point so I don't move off the ball. Just something that works for me.

thanks i will be sure to work on that

Since you are hitting both fat and thin, I'll go with Mike and say your head is moving around.

Indeed...just speculating here but you may be sliding around.  One thought would be to hit some pitch shots keeping about 60% of your weight on your lead foot.

Should feel like 60% at address, 60% at the end of the backswing, 60% at impact, then a full shift to the finish.

Great great info with the head thing. I wouldnt have thought of that right away. But also just for good practice check your set up make sure your consitant with you alignment to the ball.

Nate,

For that problem I usually like to focus on keeping my head as still as possible. By keeping your head still you will stay at the same level throughout your swing.

I could also be the fact that your casting the club. I mean cupping your hands at impact. This can lead to fat shots and thinning the golf ball. Try keeping your hands in front of the ball at impact. 

Like everyone has mentioned above, you have possibilities of many things. Movement that can be swaying forward and aft on your target line or up and down due to squatting or standing up in your swing. You could hit it fat by swinging to steep, then compensate by falling back with a more rounded swing and topping it. Another is are your shoulders turning on plain (to level or to step) which again will cause thin and fat shots. In the golf swing we have numerous variability's in our coordination. What I'm trying to say is without seeing a video, your best bet for help, that will be to your best interest would be, Go see your local PGA Professional, get a video and submit that, or find a golf instructor at your local course. 

Nate,

I don't disagree with the other advice but I would first look at how your body moves and if your body or your arms generate your power in the swing.  I like the advice of hitting smaller shots to regain confidence.