How to hide vertical toolbar

I usually open pdfs in two column format, and would like to hide the vertical toolbar on the left-hand side to gain more screen estate. Is there a way to do this or if not, can we have a button to toggle it (just like for the sidebar)?

Yes, this would be lovely. I was planning on using Kami to view PDFs two pages at a time, but the toolbar absolutely destroys any utility this function has.

I will be uninstalling it until this is fixed…hopefully I can find another program that can handle this simple task.