We designed a product to be usable in all different learning steps and styles.
Shortly (you can find lots of posts on the dynabar matter):
1. Water start Sliding hook can be easily controlled by twisting body in the direction you are going.
Body drag easier, no worry to loose board. Easy walk on the beach and less loss of energy.
2. Going upwind Helps to keep optimal weight distribution and gain upwind ability.
3. Learning freeride tricks More body freedom and easy transaction to toe side and viceversa. Allows both direction sliding, other brands don't.
4. Using directional board and wave riding No comment
5. Snowkite No comment
6. Racing More body freedom during jibe and tack. Better legs load distribution
7. Foil board No need to jibe
8. Freestyle Add fixed hook and go, or learn how to hook back with two hands, one keeps bar and the other hooks back.