Thom, I hear you loud and clear! I was 55 when I started creating my homestead farm. The first few years really physically beat me up (and whipped me into shape) but it forced me to think about effort saving methods that didn't cost a lot of money. Thus I started designing permaculture and low input farming techniques long before I ever heard the word permaculture. My homestead incorporates lots of effort saving ideas that I've refined over the past ten years. Since learning to surf the Internet, I've been able to take others' ideas and modify them for my own situation, making my farm very user friendly for a person my age. And though I'm still developing the homestead, it has grown to the point that it is self supporting and giving us a small income. Within 1-2 years it should be totally supporting us.
Permanent growing beds with permanent aisles, hugelkulture growing pits for bananas and certain fruit trees, growing boxes (both keyhole types and box types), tabletop gardens, small
aquaculture systems, and non-circulating hydroponics I find work good on my homestead. Plus the use of mulch is critical on my place.
I'm still refining my techniques to eliminate effort, thus am moving to different composting methods to avoid heavy work.
I've designed gardening to the point that a mantis tiller is my main tool. I aim to keep weeding to a minimum. Livestock consists of easy handle animals-- chickens, rabbits, bottle fed sheep. Nothing that can knock me around or cause trouble, except for my horse for now. Some day that will get down sized to a pony only because I enjoy them around.
Part of farming at my age means a change in thinking/ priorities. Some weeds in the garden? So what. When putting in fence posts and finding a boulder, I just move the post over a foot or two. So then fence isn't totally straight. So what. The hydroponic system made out of recycled stuff doesn't look all that hot. So what.
One thing I've considered but haven't done yet is to use wwoofers. I'm currently considering building some compact housing for two wwoofers. When I'm in my 70s I may need the help.
Su Ba
www.kaufarmer.blogspot.com