A very easy option is to use the "Select Next Window" key command. I have it assigned to the "W" key. Works great. I double click a sequence (for me that opens the Matrix Editor), do my editing, hit "W" and the Matrix editor shoots to the back revealing my Arrange window without having to click (and thus without running the risk of accidentally adding automation nodes).

Also, you might want to try enabling "Auto Track Zoom" in Key Commands. What this does is keep all sequences as small normal objects except the one you're working on which is zoomed out. You can leave the "View Track Automation" on and you'll only see it for the selected track. It opens a lot of Arrange page real estate and makes it a lot easier to get around and find the sequence or track you're looking for. Assign it to a key so you can enable and disable it at will.