Rhodes is well known for watersports with the strong Meltemi wind blowing, it makes an ideal spot for windsurfing and kitesurfing, and is often chosen as a destination for champoinships, which Achilleas has been a part of for some years.
Between Rhodes town and Trianda is the best stretch of beach for watersports.
At their base in trainda there is a full programme of water and beach sports plus equipment rental and storage:

Windsurfing, Kitesurfing and Sailing lessons, rent, storage,
transfer, repairing sails and boards.
Beach Volley, Beach Soccer areas, for training and lessons.
Canoe, Pedalos, Optimist, Catamaran, Laser, for rent and lessons.
Jet Bike and SeaBob for rent.