How to find a purple unicorn

Recruiters,

Any tips on finding purple unicorn candidates? I feel I have exhausted all resources and these candidates are scarce right now or not wanting to change jobs. The specific skill set is anyone who has at least three years of NetSuite experience (ERP Software Program). 

Thank you for any tips/tricks. Using all the typical platforms (LinkedIn, ZipRecruiter, Indeed, etc)

Lynnette