However the temptation to wait a few months and respond with a targetted campaign via leaflets/mail/deliveries/taxis/funeral calls etc would be way too tempting for me to resist. The time spent inbetween in planning and organising would simply be a delight.
Follow his car one night when he goes to the pub or out for the evening and then either call the old bill and report him for drink driving or do his car in whilst it's parked a long way from your house.
Go to the police by all means, the only issue is that without any kind of evidence that these incident are down to him, there's likely to be little they can do beyond speaking to him. But at least he'd know you were on to him & it might make him think twice.
What a grass