Barefoot or sock-foot is NOT ideal nor recommended due to lack of cushion and support.This is kinda stating the obvious, don’t you think? When there is nothing around the foot (that’s why it’s called “bare”), you sure can talk about “lack” or “absence”. Big deal.
This cool version of Zumba anthem Caipirinha, performed by Lindsay Jay and friends, was filmed at Camber Sands. If one can do Zumba on the beach in East Sussex without cushion and support, there is no reason not to try the same here.