I constantly work with the project window split top to bottom. I leave a small portion only a couple of tracks wide at the top. Since this is the way I work constantly I found the below method works well.
Drag the track directly to the top split section.
Scroll the main window ( bottom) to reveal where you want to put the track you are moving.
Drag the track to the position you want it
My workflow constantly includes a small split window at the very top of the project. I find this gives me many options including the one I described above. If you work that way moving tracks becomes simple and fast no matter how large the project is.