I did exactly what you said when he first called the police. My hoop stays at the top of my driveway and is moved down for games as well. As long as the hoop stays on the blacktop its fine. The police officer said if it doesn't overlap public property its cool. Yet, even if it did a little most officers would enforce it.
Today the guy made it a point to go to all of the neighbors houses that have kids and complain. Along his trip was a house with a woman whose body is rejecting a kidney transplant. That was honestly the last straw. I beat on his door and told him off. Its one thing to be anti-kid... its another to stress out someones mom who is going through so much. I told him that the kids would be playing basketball, they would stay off of his property, they would be respectful as far as noise is concerned, and I would put my foot up his ass if he ever added unneeded stress to my neighbor with the kidney issues ever again. I addressed the fact that I was doing everything in my power to be civil but that time is limited. The woman with the kidneys issues husband is a lawyer and the neighborhood would gladly join together to get a restraining order against him. Her kids come over my house to give her time to herself and he stepped way over the line with his crusade to kill childhood.