I think all ways already have been found. Any HR work is time-consuming. So the best for a professor is not making it all only his job. Hand out a big chunk of it away. Make a net of trusted helpers - PhD students, students who already finished their Masters and so on. Make a Net of trustees. Send trustees to missions: schools, universities, conferences. Not just to present you, but look out for people to catch. Continuous and distributed search is the only option.
Also, people who qualify, already probably doing something else. Which does not mean that they will reject your projects. People often decline money bump for additional intensity in their life, so they can go with you for the freedom science can give.
Also, people who qualify, often have less then ideal papers. It does not mean they can't grow more to overcome themselves. You should be careful about looking into papers and citation numbers. It is just a number, nothing more. Humans are not numbers. Einstein had effectively zero citations because he was not a scientist at all, he was worker at patent office and was declined a chance to work in all major universities.
Also, don't look at formal side. Ramanujan had no formal education at all. And nobody could ever vouch for him, at all. Same with hundreds of thousands of people who were declined a few times because of formal documents they were lacking, and it halted their progress.
What to look at, then?
Initiative. People who initiatively nest in specific places, who make their move first. If somebody writes to you, and you never even heard of, ask the person's name and what he is interested in. People who are interested in your works, will continiously generate ideas and constantly handle at least a few at any given moment. At the very least if person is interested in other areas, you can redirect him to other professionals.
Self-sufficient. Sufficiency is the very basic stage of scientific person.
Language-rich. People who speak at least four languages are better choices. And you cannot know how much a person can speak until somebody actually speaks with him. For physics field, it would be: 1 computer language, 1 mathematical language (ability to work with CAS), English (for writing papers, obviously), some other language (Russian, French, German etc etc).
Positive-feedback versus Negative-feedback personalities.
Look for positive-feedbacked personalities for scientific works. These people are generators, able to bootstrap themselves, their ideas and their equipment from the given initial conditions. Emotionally unstable, often depressed, positive-feedback personalities require careful handling and additional work on polishing their personality. Most of them are rejects by the society, including scientific society. Nicola Tesla and Thomas Edison, most likely both did NOT recieve Nobel prize, just because they did hate each other.