 Latinos constitute a hard-to-reach minority population in Iowa. We used respondent-driven sampling, RDS, to supplement random digit dialing to recruit Latinos for a community physical activity intervention. RDS yielded a 59% increase in Latino participation in just two months, with few demographic differences between RDS and random digit dialing groups. RDS may increase recruitment of underrepresented populations and strengthen community engagement, however, it is not a quick fix for underperforming recruitment methods. This article was authored by Paul A. Gilbert, Heidi Haynes, Barbara Bakiro, and others.