Unfamiliar launch sites, especially for the trailer-sailer, should be inspected for power lines. Tree limbs, high ones, should be scoped out as well. Nothing more frustrating than stepping one's mast, only to discover foliage preventing an approach to the ramp. Don't ask how I know this.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.