Tabbed dock or not? For a zoomer, about the only thing you can do is under positioning, set it to Hide off-screen when not in use and then move the "Delay" slider all the way to the right for a long delay. That would give you time to have your mouse up top and do something without the dock popping up right away. You could also move the alignment sliders either left or right so it's out of the way of your action at the top of the screen.
Question: What are you doing at the very top of your screen frequently enough for this to be a problem for you?
