I've got the same problem. All my boards are now asymetrical twin fins, missing the left side fin.
I'm sure it is a design problem with FCS fins
Just cause my fave spot is littered with rocks that I keep hitting
. well it doesn't stop me replacing the fin and going back for more so it can't be too bad!
anyway surfingboye, unless like me you have an insatiable attraction to the reef, or your hitting other solid objects like other water users, the bottom, or even impacting the fins yourself during wipeouts, the tabs shouldn't break.
Maybe a dodgy batch of fins or your board is suffering damage your unaware of? maybe in travel or storage?
During impact the tabs are designed to snap to avoid having your plug system ripped out or smashed through the deck of your board. Given the speed and drive generated whilst riding with a kite even the tab system sometimes fails to avoid this type of damage. I have recently suffered both losing the plug and having the plug pushed through my deck. Both were my fault and the result of hitting reef at speed. Much easier to just replace the fin than to spend time reparing. I know it won't be the last time though.
Been using the FCS and other fin systems for years surfing and kiting, and havn't come across fin failure without reason yet. I may however just be lucky.
cheers
