Knock on every door. Investors can appear from the most unlikely places as I realized simply getting to know my neighbors. Putting some time in the relationships you'd classify as "acquaintances" can go a long way. I run a local industry event every month that brings out developers looking to socialize. It takes effort, is time consuming, and I'm often exhausted before the event even begins, but I feel it's something I need to maintain. The majority of attendees aren't business guys, they are in the trenches developers. It's important to stay grounded even as I transition away from development. You never know when one of them is going to turn up having a rich uncle looking to invest!
Turn over every rock. This has led me to rekindling old relationships from half a world a way. Putting together our Japanese investor package has really helped me distill the true essence of our business proposition and realize how bloated the English package was.
Be flexible. According to our business plan we shouldn't need to talk to publishers for another year. When they approach you, however, there's no harm in listening. I'm surprised how quickly we've been approached by 3 of the top publishers in the world so early in development.
This is going to be a very exciting year. Our core gameplay prototype is really coming together. In fact, I'm off to hop in a playtest now!