An indicator device for aiding a cyclist in locating a desired location for drafting another cyclist. The indicator device includes a support adapted for mounting the device against a bicycle, a vane having surfaces for alignment with the wind, the vane being pivotally mounted on the support, and a vane position orientation indicator. The vane orientation indicator being connected to the vane, so that the orientation of the vane relative to the bicycle is detected with reference to the vane orientation indicator.