I'd rely on a referral network, and ask them situational questions. A bunch of "Given this scenario what would you do?" questions. Ask them what's important i

I'd rely on a referral network, and ask them situational questions. A bunch of "Given this scenario what would you do?" questions. Ask them what's important in a progress report to give to clients. How they think about it, ask for other reports. And people management I think if you find someone that seems empathic they'll probably be good at managing people. Also ask them questions about how to help with retention etc...