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This article explores the convergences and specificities of the different methods for confronting an actor with different traces of his activity. This methodological interrogation is part of a study which aims to examine the course of a practice and its underlying knowledge. From among the different methods of verbalizing action, we suggest distinguishing two. In order to study practice as it unfolds, we highlight the advantages of confronting the actor with a trace of his/her behavior and the difficulties it can also cause. To overcome them, we propose constructing another trace of activity: a situated subjective perspective. We show the advantages and limitations in confronting an actor with this kind of trace. Finally, we examine the construction of traces of activity more generally with the aim of verbalizing action.