Refinement and Advancement Classes: At Alder Creek we strive to offer classes that appeal to all skill levels. Refinement and Advancment classes focus on improving efficiency and effectiveness of strokes and maneuvers. They also teach students intermediate skills including, paddling in moderate current and waves, trip planning, and basic seamanship. If you are looking to go further in your paddling education, check out some of our more advanced offerings. This is where you will find our environment specific classes. Prerequisites vary depending on the class and the location.