Stretching

When doing stretching how much should you (on average) be able to stretch your penis out. I am only able to pull it out maybe 1 inch at most.

I never look for how much stretch I can get. I just stretch hard enough to feel some slight discomfort…not pain.

NDK

I often wonder how hard I should pull. Whether one should really give it a good yank and hold it for a few minutes or is this too much? I know my arms / hands start to ache after a few minutes!

The best advice is to change hands. You will know how hard you have to pull if you trust your intuition.