[Prospecting] How do you find superhot start-up trends?

I focus on early stage start-ups with hyper growth potential (funding, all star team, good investors, disruptive idea) and its essential that I find them quickly and look in the right place. I use Crunchbase and their trending ranks to sort out emerging trends but I was wondering if anyone had other particularly good ideas? I want to catch them before they become somewhat mainstream and start appearing on all the news sites.