I park mine in a 12'x20' outbuilding to keep it out of the weather and out of sight.
The last three words are the most important.
A good economical solution for you would be a used sea going container.
Like a trailer van...but without the wheels.
They come in 40' and 20' length, 8' wide x 8' tall, are cheap, sun, wind and rain tight, and you can lock the doors.
And some black poly pipe and connectors.If you do not have the high winds like the Midwest has you might consider a Hoop House until you can do better. The way I got permission and funding from my wife for my tractor dog house was to let her catch me measuring the patio door and the tractor and then said I just got a idea. Building a Hoop House - YouTube
Working under a tarp is easy if it's not resting on the machine. The Army does it all the time.It all boils down to money and the space you have available. If you can afford it and have the space -- no brainer ! Build a shed. You can work on it in a shed while working on it under a tarp is ...not going to happen. The goodies you buy to go with it can go in the same shed. The Vermont weather would make it even less of a question. If you have the space "pole barns" are relatively inexpensive, do the job really well and will outlast you.
Another vender that James used was Shelterlogic at ShelterLogic Corp. | Shade, Shelter, and Storage
I eventually moved up to a Shelter Logic unit.I keep mine in a Shelter Logic SUV garage. I ran electricity to it via a heavy duty contractors' extension cord run in PVC pipe just under the surface of the driveway.
My 7 cats keep the mice at bay, along with the squirrels, rabbits and chipmunks.
In long term, outside storage, rodents are a danger to your tractor's wiring. Replacing a wiring harness is expensive in material and in time. Condensation in the fuel is another issue. Inside stored tractors command higher resale prices than outside stored tractors for good reason.
Kubota tractor is stored in my humidity-controlled garage, next to my Kubota RTV500 utility vehicle. ((When I owned a PTO powered chipper it was always garage stored too.))
The Ford Fusion and Subaru Forester live in the driveway.
I store implements under old style, impregnated, 18 ounce canvas tarps which I buy on eBay from Chicago Canvas. Heavy weight canvas tarpaulins do not require bungee cords to remain in place, even during hurricanes. (( I am 25 miles inland from the Gulf Coast. )) Canvas tarps keep implements dry and sap free, while allowing water vapor to evaporate. Unfortunately the tarps deteriorate in humid Florida climate. I have to replace tarps on a four year cycle.