Bought one of these last year when my pool was built. Imrodee also bought one at the same time. Anyway, it works great on walls but I prefer a regular, fin-less brush for the floor of the pool.
This summer, having owned the King Fin less than a year, one of the springs broke. They do not have replacement springs on their website to order.
I emailed the Joe Brennan guy through his Innovative Aqua Products website (where I ordered the brush) twice and have not received a response. The first email was during the summer when it first broke and then again a month or so ago. I tried calling today, the first time someone answered, I could here rustling around in the background but no one spoke. Hung up and called back, got voice mail.
I'll update if I ever get a call back.
If I never am able to contact anyone, I guess I'll try the Wall Whale, at least I can go to the Leslie's store for help if it breaks.