Just simply hire bounty campaign managers like atriz? I don't know if Lauda accepts bounty. LoyceV? There are a lot of reputable members here and experts in promoting projects so go ahead and shoot them a PM and you can consult them and trust their opinions and advice.
Do you planning bounty campaign in social media? What is your approximate budget for bounty campaign? It would be interesting to see describing of your project 
Why? Have a plan to run their project? Only interested campaign managers should ask this question and in PM.