I've been using Activities Overview to navigate between windows, because I like being able to see the windows in 2D (as opposed to the list form of Alt-Tab, which I often need to press many times to get to the window I want).
The Up, Down, Left and Right keys currently move between windows, but I'd like to use J, K, H and L instead. Currently these keys type a search entry, but I don't use the search function much anyway.
Is there a way I can configure this setup? Alternatively, is there an easier way to change between many windows other than pressing Alt-Tab lots of times?