A lot more to offer!
I don't want to bore you with the details but Tenerife is full of hidden gems. I would whole heartedly recommend renting a car, buying a decent map and go and explore. From the awe inspiring Masca valley to the volcanic pools of Garranchico, to alien heights of Mount Teide. Hike, bike, surf and sail there is lots of adventures up for grabs.
Normally in the summer the wind strength is 5 to 10 knots stronger than the wind guru forecast for El Medano. I would recomment a floaty board 80ltrs or more and range between 4.0m and 5.5m. The biggest I brought was 4,7m and I would have loved to have brought my 5.2m. If you don't want to travel with gear. TWS (Tenerife Windsuf Solutions) have a selection that would leave most windsurfers mouth watering and they are right at the spot.
Consistant conditions, really high local level of sailing and water warm enough for board shorts, Tenerife definitely merits further exporation and for all the non water babies that may be travelling with you there is plenty to keep them entertained.