It depends on the hackathon. Pretty much all of the hackathons I've seen have a way to try to match people with uncompleted teams (or other people). I used to

It depends on the hackathon. Pretty much all of the hackathons I've seen have a way to try to match people with uncompleted teams (or other people). I used to feel exactly like you do. In order to get my "feet wet" the first thing I did was take part in the organization of a local hackathon as a volunteer.