I am between 79 & 80. I manage a coupe days on the water each week. I now prefer my high Mtn lake fishing from my toon, but do get in a bit of very careful wading now & then. I have not stepped into any water including the bath tub without my Fallstaff in hand for a couple years now. I do not think it is as much an age thing, more of each persons medical thing.
Just go fishin

Denny