I know I've jelqued productively when...
I have been adding dry jelques, bends and squeezes to my pumping while clamped routine. I do the pumping at a different time of day, or alternate days.
I have been learning from jelquing, what a productive session looks and feels like.
A good session is;
I find that first thing in the morning seems to work best. I do it in bed when I wake up. The penis seems already warm and responds well.
I have found using a velcro strap for partial clamping, while jelqing, seems to improve the overall results.
I find that if I keep the pressure to where it still feels slightly pleasant.
I find that when I’m done my shaft is at least somewhat thicker and the skin is reddened.
I have little to no edema, or spotting.
My dick hangs fuller and thicker for a while, longer if I use a velcro strap around both cock and scrotum.
My question is this; for those of you who really have gotten great results from jelquing, what is it you look for to indicate it was a productive session?