Translocation and "knowing" I could fly onto elevated deck.

One early morning in either 1968 or 1969, when I was about seven years old, I woke up at about 6 o'clock in a different location.  I was on the couch downstairs in the living room, covered up with a blanket that my mother always kept there.  Thinking my parents had decided to paint our bedroom, and had therefore moved me and my brother in our sleep, I curiously went back upstairs, and found my brother sleeping away in his own bed.  My bed had obviously been slept in part of the night, and the room was unpainted.  I had never sleep-walked before then, nor have I ever done so since then.  I determined to get to the bottom of this mystery, so I made a point to "interview" each of my four older sisters, to see which one of them had played this trick on me.  None ever admitted to such a prank.
 At about the same time, I have another memory which in retrospect may be related to the couch incident.  I remember being outside in the backyard, looking up at our deck, which was built directly off the living room, and "knowing" that I could fly onto and off of, that deck.  It was more than a simple wish -- it was a conviction.  The deck was some seven or eight feet off the ground, which sloped away from the back of the house.  So adamant was I of my conviction, that I got a piece of rope (old clothesline, I think), tied it onto a kitchen chair, and wedged that chair into one corner of the deck.  Don't ask me why I did it this way, but that's the way I did it.  Once this was done, I slid down the rope to the ground, burning my hands in the process.  I had never heard of a flying saucer or UFO at this time, much less the apparent abduction phenomenon.
Date is approximate.  PD