I rotate my res IP through my router because it's dynamic, it doesn't cost me anything. If you use proxies you'll get locked faster than you can shake a stick at for account creation and tut island.
I have bought private sock5 before and had absolutely 0 luck. Res ips are the only way to mass+farm in volumes I find ??
If you switch your home IP after that tut as well, they won't get locked. Ever. Only when I switch to a proxy, which are probably flagged I know, do locks happen