Age is just a number. Assuming reasonable mobility it is attitude which counts.
A few years ago, wintering in Gozo, the next boat was manned by a liveaboard couple. He (80) She (78); boat 25ft, no frills. They spent a whole day lugging provisions and water in preparation for their onward trip to Tunisia.
Probably one of the cheeriest couples I have met.
Have faith in your own ability. You know more than you think.
-------------------- A man may fight for many things. His country, his friends, his principles, the glistening tear on the cheek of a golden child. But personally, I'd mud wrestle my own mother for a ton of cash, an amusing clock and a sack of French porn. EB