Why can't I break down my swing?

[montru]

My pro suggested I do small swings working on my wrist rotation, every time I try and do small swings trying to work on something like the 3 o'clock-9 o'clock positions, I can't hit a ball to save my life. as  soon as I revert back to a full swing I hit the ball really well.

I was using the app on my iphone last week and videod my swing, I noticed that in the front view I had little lag in my wrists at impact causing me to lose power, that is what I was trying to work on but can't seem to break down my swing.

[Travtex]

I have a huge problem making good contact with "slow" or "controlled" swings, myself.  My natural tempo is pretty fast and aggressive (Talk too fast, walk too fast, swing too fast), so slowing things down really messes with my timing while being intended to improve it.

Far as lag and impact position (One of those all-too-rare areas I'm not so horrible at), the only thought that -ever- worked for me was keying on the trailing elbow and getting it to my hip/side -- Actually, for me, the feel is getting it in front of my hip or toward my navel -- as quickly as possible.  Work with hand position, wrists, etc, was all futile, but focus on the trailing elbow just made it sort of happen by itself.

[montru]

That's weird, I could have wrote that first paragraph myself lol.

I will try and do what you say about the elbow, thanks for the tip!!