In sport such as darts, athletes are particularly challenged by demands for concentration, skills underpinned by implicit learning, and fine motor skill control. Several techniques have been proposed to improve the implicit learning of such skills, including quiet eye training (QET) and quiet mind training (QMT). Here, the authors tested whether and to what extent QET or QMT, compared with a control condition, might improve skills among novice dart players. In total, 30 novice dart players were randomly assigned either to the QET, QMT, or a control condition. Dart playing skills were assessed four times: at the baseline, 7 days later, under stress conditions, and at the study’s end. Over time, errors reduced, but more so in the QET and QMT conditions than in the control condition. The pattern of the results indicates that, among novice dart players and compared with a control condition, both QET and QMT provide significant improvements in implicit learning.