A sports training device is provided that conveys a perceptible cue to a user indicative of a weight transfer event for evaluating timing correctness of such weight transfer event. The device includes an enclosure having a base chamber defined therein and top wall upon which a user stands or places a foot during use. The enclosure flexes or deforms during use, while an amount of user weight supported by the enclosure changes. As the enclosure flexes or deforms, the device conveys the perceptible cue as an audible and/or visual indication of, e.g., the initiate of the weight transfer event.