I agree, your normal "run of the mill" survival $hit, but a rudder pin, might not be a bad idea, but I have been on plenty of trips like that, and I am more concern with tackle malfunction, breakage, or loss, not so much yak issues, but I have alot of faith in Hobie.
That being said, I did have a trip where the rudder control handle came off about four miles out, and having to use the paddle to stear, fun times, but that was my fault for not checking my gear, I wouldn't worry too much with the terminal Hobie...IMHO...