WindSurfing - Improvement

For kids from 10 to 13 having completed a WindSurfing course on a lake or on the ocean and mastering the basics, knowing how to navigate to the different areas of the lake and to sail upwind, and having acquired the yellow level.
The objective is to improve their ease on the ocean in good weather conditions and to get to the orange level. Usually the wind is lighter in the morning creating easy conditions for practicing on the ocean.
Student-to-instructor ratio: 6 max.