Find someone who has done more than one highly impressive thing, prefereably in approximately the same line, who seems high energy and sociable. If they have anything resembling sales experience that's a big plus. One of the best hunting grounds will be in and around universities, as they're full of people with not much money and confidence that's higher than is justified, and some of them will be much more impressive than their age mates. Find one.
Harvest startup ideas by say, looking at previous Show HN posts, or doing a Madlib generator on the Crunchbase DB for X of Y, and look for something that you can build a good story about explosive growth around, or have what you think is a good idea already.
Sell your ambitious young go-getter on your idea, or on you, somehow, and start pitching VCs with your incredible story of wild growth and fantastic riches. Meanwhile iterate on your idea. Pivot if it looks like a good idea, and hope and pray for growth while pitching VCs all the freaking time.
Basically, have an idea that could conceivably grow explosively and have a business guy with previous record of Impressiveness, capacity to Believe in your Great Idea, and the ability to Sell Stuff, including your Awesome Idea.
If you are that guy, and you can program your own mockup and iterate you might be able to get into YC as a single founder.
I wasn't really joking at all with my description. I mean there are almost certainly groups that fit that description perfectly among YC alumni.