I had exactly the same problem, I came up with pretty much what you are doing now. Focus on a point directly ahead while pulling away, foot up and onto the rest smooth and quick, get stable, i did my quick check on count of 2 try do it relaxed and smooth, don't turn too far or you will pull on your shoulders and the bike will follow which you will try to correct when you look straight ahead again and that's the start of a wobble, look back to your focus point, another count of 2 for me, physically make your self relax before you turn, and as your turning repeat something till your round, i used "drive" so as to remind myself that if the rear wheel wasn't getting drive it was foot down or bike over I also practiced this till the cows not only came home they went to sleep. If its just the wobble that's throwing you off, practice pulling away looking and stopping, separate it out into sections until you can put them all together. Are you ok with the actual turn