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I don't usually have any physical contact with my rooster. Sometimes when I am hazing the flock back to the pen with the long green pole, I will touch his tail feathers with the pole if he is too far behind the flock. I never need to make more than a gesture in his direction anymore. All I look for is for him to move away instead of standing his ground. 
As for the mating thing, I call him out when he starts the "hey baby" dance. When he tries it close by, I make a move as if a foot or finger will be contacting him soon along with a loud "Hey, get a room!".