How can I make the most of my 3/4 monitor set-up?

This self-post was originally posted to /r/KerbalSpaceProgram. See more things from Dan's Reddit account.

I can span KSP across them, but that doesn’t really help me as much as I’d like. What’d be really useful would be the ability to show the orbital view on one monitor and the staging view on another. Is there any way to achieve such a thing?

Normally when I’m faced with a problem I just add more boosters/struts, but that doesn’t seem to be helping this time.