[JRTJH]

Shrink wrapping a boat makes sense because the bottom is "leakproof"... Shrink wrapping an RV is "impossible" because the bottom can't be sealed and sealing the top and sides still leaves all the holes in the bottom for "highway access" to any rodent, insect, snake, or other small critter... If RV bottoms were like boats, then shrink wrapping would be effective... but, it ain't.....

As for buckets of dessicant (damp-rid). In 3 years time, those will have filled with water, turned to mold and grown "who knows what"...

Leaving any RV outside is an invitation to a wreck in 3 years. With nobody checking the roof, resealing it, cleaning it, moving cushions around inside, and all the other "what happens when we use an RV".... it's going to be a mess. Even storing it inside, you run the risk of seals drying out, water pump diaphragm becoming brittle, wiring, propane hoses, brakes, magnets, bearings, air conditioner Freon charge, propane regulator, cushion foam, cloth/fabric curtains, blinds, mattress, toilet seals, slide seals, awning fabric all drying out and becoming brittle, ammonia charge in the refrigerator leaking, even the bearings and contacts in the slide motors, awning motor, landing gear/tongue jack motor, all corroding and failing soon after you start using it again.

It's much like "closing up a house for 3 years"... things will hardly be the same when you return 3 years from now....

Even though you're "upside down" it may be better to not have the burden of 3 years of monthly payments on a trailer that's depreciating, deteriorating and not being used.

You'll likely be much better off selling it now, saving the monthly payments, insurance payments, storage payments and replacing it when you get back in 36 "short months of overseas service".... BTDT and so damned glad I didn't have a "dried up, unserviceable RV to try to get working again while trying to get to my next duty station with only 30 days of leave and 6 days travel time, two families to visit on the way and shipments in storage as well as hold baggage that's being delivered to a new duty station while I'm trying to rent an apartment until we can get on the waiting list for on-base housing".....

The burden of a RV in storage, the money to pay for it while gone and the burden of trying to get it "running again"... well, for most, it's a losing proposition to try to store it for 3 years.....