I'm very similar on this. What I do is find someone who loves marketing and get them to help out. Sometimes this is as a partner, sometimes as an employee or contractor, sometimes by hiring a firm. It all depends, but usually it's turned out to be "contractor".

To zoom out a bit, I think this touches on a thing that solo entrepreneurs often try to ignore: that no single person can adequately do everything that is needed to run a company -- even a tiny one. I think a key to success is to be very open and honest with yourself about what you are and are not good at, and to find other ways to cover those things you suck at.