But it is really worthwile to discuss about the implications on the catsailing itself and the necessary adaptations on your boat. Righting after capsizing, climbing abord, sailing with the sheets cleated, etc, etc are all parts of the sport which become more difficult with age.
You're right, a thread about adapting a beachcat to an aging sailor would likely be a worthwhile endeavour.
I'm not quite in your age bracket (but very close), but I consider myself "lazy" in the respect that if I can figure out something that involves less effort and achieves the same result, I opt for that method.
Righting the boat after capsize - there are several methods available that seek to increase the leverage you can apply to the boat for the purposes of righting it. I prefer the "lazy" way of gaining weight (which is surprisingly easy and enjoyable
)
Climbing aboard - near the top of my old righting line, I fashioned a permanent loop that I could put my foot in to get a step up to start the climbing process. It was low enough in the water to get in, and by supporting myself by the shroud base, I was able to get my waist about 1/2 way up the side of the hull. I could then grab either the shroud or the trapeze handle and slide the other leg up on to the hull. My next iteration will probably be a second loop lower on the rope so I don't have to do the "deep knee bend/squat" to hoist myself up.
Sailing with the sheet (main) cleated is becoming more of a practice for me, but I'd be the first to admit it's probably slower and requires more rudder movement than sawing the main or spinnaker.
Also as we get older, we opt for more simplistic setups... uni-rig boats vs. sloop, solo sailing vs. two-up, and eventually the slower, less likely to flip boats (Hobie Wave) come to mind (although they are harder to move on the beach than an A-cat).
