What Zyph said "Don't let one bad experience deter you." You need spotters to look out for you, you can't just do it on your own from what I've seen and heard.
I really want to try it so bad but I know that I'm not ready yet; I need to get more experienced with psychedelic. It's a really intense 15 minute psychedelic.
I've heard people going to another planet seeing 'aliens', going out to a colorful tube of the universe and seeing colorful shapes that somehow make you feel amazed, appreciated, awakened and just calm. Well I hope anyone whose done it could tell us their story or something about it. I'll definitely will try it one day for the experience.