Cripple and leave to fester works, just depends how you do it.
For example, in PB games azza tends to die a lot, but the only game his conqueror managed to win was in PB5 when I killed him using that tactic. Basically need to be able to cripple him, and then manage any aggression from him and from your other neighbours, so you can build up again, defend and consume him at hte same time 25 odd turns down the road. You had to do that and contend with mackoti, which is the main reason that tactic isn't the easiest to pull off.
For example, in PB games azza tends to die a lot, but the only game his conqueror managed to win was in PB5 when I killed him using that tactic. Basically need to be able to cripple him, and then manage any aggression from him and from your other neighbours, so you can build up again, defend and consume him at hte same time 25 odd turns down the road. You had to do that and contend with mackoti, which is the main reason that tactic isn't the easiest to pull off.