pools, water parks

During my pool tests, I sometimes meet people who refuse to use water-shoes.
They say that water shoes reduce the feet's thrust, or inhibit the classic swim styles: they hate to train with fins or shoes.
They are right, traditional water shoes create strong resistance to advancement and don't push. Keep your legs still and save effort.

Someone complained that the Aqualander did not push as much as a fin. Of course, they are not fins. But try to walk on the edge of a pool with fins or to swim with other sea shoes, well then we'll talk about it.