Jon Leger's group has been promoting a strategy that uses their Social Multiplier tool to curate pins from other accounts using keywords, then changing the target URL to a redirect domain in 100% of the pins.
Basically 100% of the pins in each account point to a money site. They use PHP and an .htacess file to swap out the root domains on the incoming URLs instead of 301 redirects. It tests clean in a redirect sniffer.
They claim a suspension rate of less than 5% across hundreds of accounts. Since the process is completely automated it really doesn't matter if an account gets suspended, there's very little time invested in each one. They don't even bother taking the time to completely fill out the account and confirm the website.
It's too early for me to validate all their claims, but I can say in one of my accounts (in a popular niche) I'm running 100 pins/day, repinned from other accounts, and redirecting 100% of those pins to my money site. I'm seeing 100 or more visitors a day from just that one account. It's just a few weeks old with less than 600 followers.
I've not tried redirecting pins in any of my aged accounts, I have too many followers to risk losing without testing it first. So my current project is to scale up this repinning/redirection strategy to 20-30 accounts and see how it plays out.
I don't think I'm giving away any proprietary information here, it all can be found in public webinars Jon Leger's team has recorded in YouTube to sell their software.