Well I guess it was bound to happen sooner or later with only one set of keys. Misplaced and of course she's all closed up for the winter with the door handles and deadbolts locked as well as the hatc...
If you have the standard baggage door locks with the common 751 / CH751 key you might obtain one of the keys and open a baggage door under a bunk or bed and give a skinny neighbors kid $10 or $20 to shimmy through and unlock the trailer from inside.