https://community.usms.org/swimming/f/general/5142/any-one-train-with-a-monofinI&#39;m trying to justify the cost. Seems better fitted for long course pool training. I&#39;ll bet they are great for core body strength. Thanks, Treeen-USTelligent Community 12https://community.usms.org/thread/65061?ContentTypeID=1Wed, 11 Apr 2007 11:24:49 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:4387ff57-255a-4f47-b488-88210651026bMuppetTreebox, Welcome to the forums, neighbor up 95! To answer your question, I don&#39;t regularly use one, but will bust it out occasionally. Back when I had broken wrists, I would use the MF a lot, almost every practice. Our coach had me going 10x ~35M underwater on 1:30 or so, bulkhead to bulkhead. Built up a real strong core, strong legs, and a killer Steamline Dolphin Kick (SDK). If you&#39;re a little unsure about it, have your team or facility buy a few (make sure they get one your size!) so you and others can test it out.<div style="clear:both;"></div>