To choose a sail, you need to consider your level of experience, the speed of the wind, and the size of the sail. For beginners, smaller sails – featuring a size of 2.5 to 4.5 square meters – are ideal. Experienced windsurfers can go up to between 5 and 8 square meters. However, in areas featuring stronger winds – say, winds of 18 to 30 knots – smaller 4 to 6 square meter sails are ideal for the experienced windsurfers.