I’m personally not so fond of catch-up freestyle, but this description is great. From the Northern Arena swimming facility in North Auckland, New Zealand, where they by the way have a spongy bottom in the teaching pool. Never heard of that one, but sounds nice for your knees.
rokur
Production engineer and certified swim coach. Full-time IT consultant, spare-time swimming aficionado. 2 sons, 2 daughters and a wife. President of the Faroe Islands Swimming Association. Likes to run :-)