My ball busting was spur of the moment, I didn't have any straps or velcro or anything, I just got the urge to get my balls smashed, so I looked for something that would do that and this is what I ended up with. It worked well.
Some like an audience, others not so much, each should decide for themselves. I am fine with an audience and they can verbally encourage so they can enjoy the show more. To hold my dick up out of the way, I made a nylon belt and it is secure with velcro so there is no hard buckle to injure me and there is an elastic loop hanging down that loops around my dick head; it can still flop around some but still allows a clear unobstructed path to my balls, flacid or hard. I really do enjoy the devices men make and use to self bust their balls. Enjoy the swinging