When I was 9 or 10 I went to a Billy Graham Crusade at our local stadium. Before the actual event my father took me to an evangelism training seminar, where Christian volunteers are taught how to pray with people who want to be born again and then connect them to a local church. I don't remember very much of the training, except them going through the
"Roman Road" method of salvation, and a lot of guilt-inducing talk about the absolute importance of trying to convert your friends and acquaintances to Christianity.
Billy Graham coming to town was a very big deal for evangelicals, akin to a visit from a pope. Almost all the local conservative Protestant churches cooperated in sending volunteers, raising money, and so on. This was the most organized and unified I ever saw our local churches, which usually had some kind of feud going on amongst themselves.
The actual preaching by Billy Graham was anti-climactic. The sermon wasn't that different from what I heard in church all the time, except delivered from a stage so far away I could barely see the preacher. I remember being surprised and confused as to why exactly all the people walking up the aisles to ask Jesus into their hearts were doing so. That was all that was needed for them to make such a momentous decision?
My dad did find someone to convert at the Billy Graham Crusade, and kept some level of connection with him for the next few months. Eventually though, he just drifted away.