In an effort to help consolidate some of the info on this issue, here's a script that was buried in one of the topics here on WoWI.
Make a new macro, name it whatever you'd like. Put this text in the macro and drag it to your action bar and click

It will resize the Blizz tracker window and place it on the left half of the screen about mid height.
/script WatchFrame:SetHeight(400)
/script WatchFrame:SetWidth(300)
/script WatchFrame_ClearDisplay()
/script WatchFrame_Update(WatchFrame)
***Credit is due to whomever originally posted it. Unfortunately I've forgotten who that is
