Ask you what is the difference between swimming and diving Master, short webbed feet and long flippers? The swimming pool can use short fins to play?
The power swing will produce than short strong, speed must be fast, but also rely on the thigh force, only fins can increase the number of buoyancy,
Freestyle, backstroke legs are on the thigh force, web footed driving force relatively much stronger, long fins vibration in the water surface is also larger,
I just can't feel much power. Fin can exercise the leg strength, just started a few days legs will feel fatigued, a long time will not have.
