Interesting timing, I just did my gutters. (use a gas blower, so I dont have to crawl around the perimiter(SP)
and the last dozen times I have climbed the ladder to the roof,before I start the climb, I take a bit of time to say to myself "watch out, take your time, and be really careful", It helps to do that , because I have not scared myself, again....
and 20 feet is nothing. after you have climbed 140 feet up a ham radio antenna tower and get to the top, and have to let go of the tower to work on the antenna,and rely on the safety belt to hold you on,,, pucker is one descriptionof the feeling.
Can not Imagine moving to one of "those' places",,Riding makes it soI don't have to...
Bud