Its not the general way because you are going against the wind
. But thats not to say it can't be done.
I would love to do that side of Africa
and also the Cameroon/Gabon area.
Occasionally there have been articles in Cruising World about people doing parts
Some areas (Senegal???) have a good (but dirty commercial) port and want tourists.... but then that may be the country in a new civil war / revolution / incursion / famin / Gihad etc etc etc
I don't remember anyone from this forum having gone there recently.