I hear ya. I slept wrong last night and woke up with a hurt back.
Do you have, or have access to cheap (or free!) cattle panels? Free in cattle country? LOL
Funny you should mention that. I was just thinking yesterday about how useful a cattle panel ceiling of sorts would be in a high tunnel. Hang anything anywhere, attach overhead infrastructure. Then I started adding up $30+$30+$30+$30+$30+$30+ and .... Cattle panels with a frame for gates is new to the to do list.
I wrapped cattle panels around my little front yard garden this year because the goats got over the field fence last year and stomped the plants down that they didn't eat. Being a fabricator, I have lots of ideas for them and get them for $30 at the feed store. I already have a firewood rack, 24" x 24" x 78" tall firewood rack sitting next to the wood stove. I made it a few years ago out of one panel. No real frame so it has to be attached to the wall/studs but it's been stuffed and the shelves hold up good. A 16" panel cut into 4 pcs would make a nice newly planted tree protector. We have pot/pan racks made from them before that I did 20 years ago from small sections I found.
But, there are a lot of ‘income streams’ you can have when you have some land.
I've started growing shiitake mushrooms twice now but done a piss poor job at it. Mostly at keeping the logs moist because I had no good way to do so. That tank sprayer will help with that. The woods are too rocky for things like cultivated ginseng and the various roots that grow here wild and have value.
I am still trying to talk Beau into taking advantage of all the woods we have, as far as FREE hardwood
I cut a couple of TRUE red oaks when putting in fence. They were over 2 foot in diameter and the branch/knot free logs would have brought some money but were deep into the woods. We kept really warm that year. It's the top rated wood for heat production.
First time we lived in MO I cut a Black Walnut down because it was in the way. Got $250 for a 18" log, 16' long. That was 20 years ago. There happened to be a buyer there that exported them for laminate use in Oriental countries. They still like their dark wood tone interiors.
I have some TRUE white oaks here and those are very valuable. There are a couple of hot spots for white oak for making wine barrels and this is one. A forest in France is the other. We have stave companies here. 
I really don't have enough trees to do anything but slowly harvest for our own use which is firewood and smoker wood. We've got hickory. I'm a tick magnet so on my knees in the woods? naa. Shiitake logs are doable on the edge of the woods with some protection from sun and critter. Pallets are definitely free and the right ones would give the right shade.