Trying to pull this away from anti-ship tactics and back to the issue of how does Hitler get Franco to go along. It seems fairly clear from the source material I was able to dig up that Franco wanted parts of French African colonies as part of the dowry but those colonies were controlled by Vichy so unless Hitler is willing to risk Vichy colonies deciding that DeGaulle is not such a bad guy after all and Vichy France proper deciding their relationship with Berlin needs to be rethought, then this isn't happening.
I go back to my earlier post - the best scenario for this happening is in a France fights on scenario and I'm not sure this situation is a win for the Germans. The British get the French colonies and the forces they command (including most of the fleet) on their side. The Germans have to occupy Metropolitan France and are now saddled with an ally that is desperately poor, still recovering from a devastating civil war, and dependent on all manner of imports from overseas to include food. All this for Gibraltar?
I go back to my earlier post - the best scenario for this happening is in a France fights on scenario and I'm not sure this situation is a win for the Germans. The British get the French colonies and the forces they command (including most of the fleet) on their side. The Germans have to occupy Metropolitan France and are now saddled with an ally that is desperately poor, still recovering from a devastating civil war, and dependent on all manner of imports from overseas to include food. All this for Gibraltar?