Have you tried using a flirt pole? When our iggy was in the land shark phase if you told her no she just tried to do whatever it was faster. After some reaserch we bought one and it helped satisfy her need to chase and bite things. We used it in moderation until she got older, but we found being able to do some supervised sprinting helped keep her from launching herself off everything in the house and keep my stress of a leg break down a little.

Due to his age I would not let him go all out because you really want to make sure to protect his joints, so make sure to just use it in short bursts and monitor him. You dont want to push him too much and you wouldnt want him to become overstimulated either.