On: 'Underwater bicycle' propels swimmers forward at s...

[lupusreal]

Yep, going fast with flippers feels great.

[LtWorf → lupusreal]

Feels less great for all the people in the pool that you kick.

[_carbyau_ → LtWorf]

My major hassle with touches in pools is frog kick. I have zero issues with fins, on me or others.

[Broken_Hippo → LtWorf]

You don't have to do it in a crowded pool.