Hi all, I am getting ready to build a custom Skeg (think rudder, but, well not!) for a sea kayak. Plenty of info exists on UV degredation, but I have not found much on what salt water submersion will do to filliments. I hate to get far from shore and have a blade break due to unexpected effects on the material. Beyond the obvious hydroscopic absorbtion (*cough* PLA, *cough* Nylon) I want to undby Calsa - General