I just wanted to share one session I did and enjoyed quite a bit. I hope more people would come forward to do the same.
Here is what I did
I tied my knees together and then my ankles in the same way. Then I tied my balls in such a way that they are separated from my cock shaft by coils of rope. Then I tied this rope to my ankle rope with a short rope forcing me to stay in a strict kneeling position or stretch my balls in a very painful way.