I have docked over the past few years a few times when possible. With 8″ and having a girth of over 6.5″, that is tough for me to get docked.
It matters not on how big the cock is but more so if the foreskin is pliable and stretchy. Cock Docking is a fantastic sensation and a rarity as u know in N America with so many cut guys around and also, not many guys might what to do this and they need to have a somewhat stretchy hood as well. email@example.com