Golden's are very active dogs. Get a 5 gallon bucket of tennis balls and sit on your porch and chuck tennis balls until your dog gets tired. It requires very little physical energy from you and wears your dog out. I hope your dog brings the balls back, because if not, you'll have to go collect them after you're done. But that's not so bad.
Mr Sweaters had to be trained to sit in a chair next to me. Before that he would jump on me and lick me to death. So I bought a camp chair and trained him to sit in it. He can still be near me and I can still get some work done.