>>> When i set the collapse option to ToLeft, i just get the arrows to the left in the panel header
It sounds like maybe you have the NavBar fill-docked in a parent container, rather than just left-docked? if it's fill-docked then the parent needs to be resized.
To me, the C1NavBar collapse functionality just looks like it sets the Width real small and does a few things with the arrow buttons and the panel area. Taking that into consideration, check out my sample which implements this collapse functionality all in code, and it also draws the panel header vertically in the Paint method.
-Greg