wife here. I know you guys love time stamps lol. If you are generally interested or concerned this is a great read. https://ropestudy.com/courses/101/lessons/reducing-risk/topic/nerves/ my husband posted somewhere a picture with different numbers on them. It is a great representation of how over time I learned to do this safely. This is the reason that the tape ruler I bring is so important. I use it for the exact heights. I agree that others should learn their limits before experimenting with stuff like this. So just winging it isn't a great idea.