I am increasingly enjoying the ride of a couple twinnies I've picked up and now seriously considering having one made or buying one. Thing is, I found the traditional FCS fin plugs have snapped a couple times with a decent bottom turn with twin fins such as the MRT Fxs. Hence I am hesitant or not sure if such a system exists that would take enough force and still survive. Honestly I am hesitant on going for built in fins as if I was to damage one, it'd be a pain to get it fixed.

Futures any good for running twins or any other systems out there?