Built a few Table Top Gardens so I don't have to bend over so much. Everything is waist high. 3ft high to the top of the garden. Each person can make them as high as they need to to make it more comfy to garden.
I do like big plots of gardens too but these are extra special. One 2ftX8ft TT Garden will grow 16 cabbage , broc, or cauliflowers or mixed. One per every square foot depending on how big the plants natural space should be. Or you could grow 256 carrots.
Or a salad garden. In addition to having a Table Top Garden, You can build an extra frame rather it be pvc or wood so you can cover it with shade cloth when it is too hot or you can cover it with plastic when frost is about to arrive, or get an early start.
I think covering the squash is a great idea to keep out the squash bugs. You can uncover it in the mornings and pollinate the females yourself or let the bees have a turn. Check for bugs before you cover it back up. If you don't mind pollinating a few plants, You could make screen box frames to keep out even smaller insects. The possibilities are endless so let the imagination run wild.
Table Top Gardens can be made from anything you can box in and fill with soil. The whole Idea is to bring it up to your waste.
Old Picnic tables, Pallets, bed frames, deck banisters, etc... I prefer my gardens to be at least 8 inches deep. 10 is better and 12 is excellent.
I personally don't like growing pole beans , vine veggies, or sweet potatoes in the table top gardens because they take over the box and you end up loosing a lot of good growing space. I prefer to grow the vine plants on the ground with a trellis. Unless you want to take the time to train the plant to grow over the sides and downward. Wave Petunias did great in the TT garden.
Here is an example of making a PVC hoop over the TT garden for early plants or protecting from the first few frost to extend the harvest time.