Beginner I need help

I’ve seen a bunch of pictures and stuff of people caged and I thought it would be fun to try. But I also want to do it for other reasons

1 I’m tired of having a boner and it showing in my pants
2 I want to stop jerking so much but I don’t have the will power to.

My cock soft is basically flat with my pubic area, hard it’s about 6 inches long. I was looking at the flat cages vs the other stile. Please help.