As the average pirate does not kill anyone
Tell that to the family of the brit they killed two weeks ago and then kidnapped his wife. Tell that to the family of disabled French woman they abducted at the weekend.
Your limp-wristed hug a pirate policy actually perpetuates the problem because while we remain ineffective and do nothing then they will carry on.
Until they either a) don't come back or b) wash up on a beach they will keep at it. My solution is cheap and would be very effective very quickly. It might do you out of some customers though