How would you even bootstrap without a product to sell? If you have actual paying customers, that means you at least have an MVP built. A list of leads doesn't count, you have to convert them to bootstrap, and to convert them you need an MVP. If you're a non-technical bootstrapper you should probably be looking at an employee or freelancer rather than a co-founder to build your MVP.

In other words, "it's the money, stupid." If you're a non-technical founder with just an idea and no existing funding or paying customers yet, that is why you can't find a technical co-founder. No good tech talent is going to work for equity in a bootstrapped business, because equity is worthless without the "hockey stick" growth trajectory you're shooting for when you take funding.