Now, you have triggered a VERY sore point for me which is I have 42 years sailing inland, coastal, offshore. I also have, at 68, no knees left, one spinal fusion and laminectomy, hips that hurt with every step. Have I given up sailing. YOU BETCHA! When YOU have fallen off of three foredecks because your pins will no longer save you with dexterity and grace, then YOU tell ME how your crew is 70 or 80 or gives a rat's ass because we are ALL different in our aging processes. Put that in your pipe and smoke it......as my Ma usta say.