Corpus-based language teaching is one area of second language (L2) pedagogy in which L2 teachers may benefit from extensive guidance on how to integrate digital tools into pedagogical practices. Direct corpus approaches like data-driven learning (DDL) cultivate learner engagement and language discovery. However, second language writing (SLW) teachers face significant challenges using corpora in the classroom, and these challenges often go unaddressed in language teacher education, particularly for in-service teachers. This paper reports on a case study in which six university SLW teachers participated in an online corpus-based pedagogy workshop. Teachers developed DDL activity plans and wrote in reflective diaries. The analysis of these artifacts shows that the teachers tended to follow one of two paths toward knowledge integration, as either Planners or Seekers, when implementing corpus activities in their classrooms. The teachers also reported increased confidence in applying direct corpus methods to their lessons by the end of the workshops, though they expressed the need for continued, long-term support.