I don't have specific answers for you, but I'll share an idea I've been kicking around. I'm not 70 years old but I was trying to come up with a way to grow strawberries off the ground. This year, I tried coco-lined wire hanging baskets, but I think they dry out a little too easily in my local summer climate -- a bit too much. Those I had where convenient to water daily did pretty well. I also devised an overhead sprinkling irrigation for one of them by diverting a connection from the soaker hose for one of the veg beds. They were in partial shade to avoid mid-day sun.
I had white everbearing alpine strawberries in two of the baskets, and an unID'd everbearing/dayneutral variety in one. The alpines did better than the regular strawberry. I think they are more drought tolerant, and also manage better without constant feeding. The red one was overtly lush and green with foliage initially when I was dipping out of a 5 gal bucket with two goldfish in it for mosquito control to water with -- too much nitrogen, I think. Trouble with the red one was that something -- bird or chipmunk discovered it and started stealing berries.
I used 12 inch and 14 inch baskets, solidly filled with organic potting mix and tomato-tone buried in the bottom. They are heavy but holds plenty of soilmix. But it meant I needed sturdy hanging support.
I'm picturing re-purposed monkey bars or a ladder to hang the baskets in a series. This would allow draping a bird netting over the structure, possibly cinched closed below, for protection from pesky predators while allowing them to be insect pollinated.
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