That was my kinda my idea. There is a surprising amount of forage available.Can the forage support flooding the area with your apiaries? If it were possible, that's what I would do. and mate the queen in the center apiary.
I don't know. Your question just made me realize I need to find some data on average feral hives per square mile in my area if it even exists. Alternately, I guess I just experiment blindly, or continue buying queens...Would swarm traps help eliminate some of the african swarms?