I've never worried about maintaining alpha position. I play tug with Gryff all the time and let him win all the time. He is intact. I do bitework with him.
If the dog is stable and has a solid temperament, there isn't much you can do to mess that up.
BH, OB1, TR1, AD
Rottweiler/Hairy Dog mix?? Shelter rescue
Gryffon Vom Wildhaus