I found this app that gives you a screen overlay navigation bar that you can edit and resize. This overlays on pogo to get the Nav bar back. There is a quick setting you can add to your notification bar settings to toggle it on/off. I've made mine small enough to fit under the menus and buttons fully.
App:
https://play.google.com/store/apps/details?id=nu.nav.bar
by TheShredda