I have tried a bunch of things for this issue. I tried placing a trackpad between the two halves, I tried it on either side as well. It didn't really work for me.
What I landed on is a) mapping the mouse to an extra layer that I use when I only need minimal movement, b) using VIM extensions for as many programs as possible, including my browser and c) just using a normal mouse otherwise.
What I landed on is a) mapping the mouse to an extra layer that I use when I only need minimal movement, b) using VIM extensions for as many programs as possible, including my browser and c) just using a normal mouse otherwise.