Sorry to hear of another rudder failure. I know how that would shatter your confidence with future trips.
FWIW, I've had two rudder pin failures, both with the old black pins. The first I fixed back on land , the second time on the water kneeling in the rear well. I've had no failures with the new gray pin. I guess though that with a pin that is designed to break you have to expect that it will at times. After my first pin break I did some practice so I was ready and able to change it on water. It was a simple fix and I was underway again in minutes.
I've had my fair share of problems with both AI's and the TI but as there is nothing on the market that compares to them I will continue to enjoy them and put up with the problems. At times I've been very disappointed (AI -cracked drivewell, TI snapped xbar mast retainer, various drive failures etc) but the enjoyment I have got from both craft far outweighs the negatives.
Another plus is that Hobie have been outstanding with warranty claims and have always done their best to fix a problem, even when it may not have been a fault of theirs.