When to replace Mirage Drive Turbo Fins

[Fomen]

I recently bought a used Hobie PA12 with the turbo mirage fins. The trailing edge of the fins looks a little tired. It's not nice and straight. It look a little wavy and stretched out. Is this normal? At what point do they lose their structural integrity and need replacement? Just curious.

[JohnMckroidJr]

Pictures worth a thousand words. Sounds like it has a bent mast, probably needs the mast replaced.

[Iceman]

I would not worry about replacing unless they split and expose the mast.

[Fomen]

Mast isn't bent, and fins aren't torn. Just look a little worn- that's all. I just didn't know if the stretching of the material negatively effected performance on the water. I will snap a pic and post it up. Wont be until this weekend though. Then you guys can tell me what you think.