When Should You Find a Co-founder? I'm going to go with my gut here and say: Before your idea is even half-baked.
I've had a couple discussions recently about when is the right time to look for a co-founder. As soon as you have an idea? Once you've tested some of your core assumptions? Before you have an idea? There's no rule and I haven't seen anything written on the subject.
The Perfect Idea
The goal of your startup is to find a business model that works. If you think you've come up with the greatest idea ever, everything is worked out in your head, and you just need to execute, well...you're probably wrong about everything (or at least most things) and you won't get the one thing out of a co-founder than you really need: a second opinion.