At WEEL / WEZR outside DC in 1970, the CE discovered that one of the jocks would go out to the towers every Friday after his shift. At first, he thought the guy was, for some reason, doing "practice" base current readings.
Then he discovered that the guy would leap onto the tower, hang on for about 10 to 15 minutes, and then spring off. When questioned about safety and sanity, the guy said that he always did that before a Friday date because the RF "temporarily made him sterile" so that he could enjoy his date without the need for protection.
Changing a beacon, if you use a harness and alternating hooks, is quite safe and the view is spectacular in many cases.