Make a special trip (like before a 2-3 day weekend) and start by giving him some tender love which turns into a deep, soulful screw. You know the kind where the sheets get all sweaty an come off the bed. Make sure he cums. Sleep. Then, wake him suddenly and demand deep throat. Make him choke, gag, and cry. Tell him that he better slick up your rubbered dick with spit really good because that's all the lube he's going to get before your fuck him.
Then, fuck him from behind like a bitch. Wrap your arm around under his arm and bring your had to his throat. Place your hand around the front of his neck and gently but firmly squeeze and push upward while you're reaming his ass good, hard and deep. Whishper in his ear that this one is "my way" and thet he's going to be a good boy and take what you have to give him. Make him acknowledge you with "Yes, Sir." Make sure that's a strong response and not some weak whiny response. fuck him hard until you cum. Plant your root to the balls. See if you can work your balls into his ass a well for an extra delight.
Continue these kinds of sessions all weekend until he is raw, dehydrated and too sore to walk.
This should keep him obedient and prevent any "wandering".