Comment by skeeter2020

>> The obvious is of course luck through one's social network.

I'd really counsel you to pursue this but not focus on the luck piece of it (which really is a big part). Just like hiring works best when it's a recommendation of a known good hire, look to your 2nd (and possibly 3rd) degree network. Force yourself to attend events, programs and communities (irl & virtual) outside of your direct sphere of expertise. Economic development orgs in your city/region might work too. Maybe you can do it with some help/practice and don't need a partner? You could be looking for a support network more than business expertise; the good news is IME that's easier to find than a partner.