I've seen this idea someplace else here and I'm not giving the original author proper credit, but how about a very long pipe bolted to your eave at or near the roof peak. Whenever you put it up or down, you only have to climb a ladder on the side of your house to secure or loosen the clamping bolts. Then tilt the pipe up or down depending on what you are doing.
The pipe's length would need to be roof peak height plus at least the seven feet to place it sufficiently above the roof peak. During a tilt up or tilt down the pipe might be sort of floppy from the total length, but once in its clamping bolts on the eave and maybe on the side of the house, the upper portion above the roof line should be fairly rigid. Once in place, the pipe's weight would help hold it securely on the ground.
I guess this method may only work if you have a one-story house. Getting to the roof peak on a two-story house would be amost as bad as climbing on the roof and the length of pipe necessary during a tilt up or tilt down would be pretty floppy at those two-story lengths.