I had the idea a while of taking the teardrop shape and flipping ir front to back then stretching the height to make it stand up in the middle. This way the gradual sloping roof would be in the front and the more straight section in the rear. Problem is the axle would need to be right at the highest section in the way of the door.

...without causing property damage to the storage unit itself. Plus, some of those large gates cannot be opened easily without power. If you happen to have your stuff in an multi-level indoor storage facility with elevators, you're not quite getting this whole preparedness thing...

actually, there is a place close to me where the 'outside perimeter' of the building has garage type outer doors that open manually.

That goes back to what I said earlier then, if its easy for you to break in to then its too easy to break in to for someone else. Storage places are targets, you may find your stuff gone one day.

IMO a storage locker is no harder to break into than a home built garage, during a power outage. all garage type doors must have an 'emergency' handle or lever on the inside to open them. if there is no power outage, i would think that the facility would be more secure because its made of concrete, and alarmed with CCTV.

for me, because i will probably end up living in another condo or TH without space to store a TD, i will probably be storing my trailer in a storage facility.
this could be good because its' on the outskirts of town for bugging out. bad because i can't keep an eye on the locker on a daily basis, without going out of my way.
everything has its' pros and cons, when your budget is limited.

peace
al

Site with extensive info/resources on smallish lightweight molded fiberglass travel trailers of all designs.