Great insights. I am hard pressed to take ideation to MVP stage without any budget and lack of good designers and tech minds. So networking helps. But in the end what you get is a random distribution of talent which might or might not be what you are looking for. In an ideal setting I would love to go to startup weekend hosted by Founderdating. The kick off event had a pitching ice breaker which does get you kicking.
But you are right just go there for fun and drinks rest is all chance.