Best to do is a new ethernet card.
Call your ISP, say you have had threats of DDoS and want a new IP to remain safe.
Never use a creditcard / name used on another banned account.
Never use a password you've used before.
Don't pick a username/login name that can refer to your old.
Try to stay away from your old crew/hearties for a few months at least.
Babysit your bot, if you really have to do it.
Never do /who on your old crew/hearties/own pirate. It's weird to randomly look up someone banned etc.