For me right now, enlargement is secondary to making gains to one aspect of EQ that I don’t often (ever?) see mentioned; call it “penetration quality”: just how hard can I drive the head of my cock into the flat palm of one hand, while otherwise using no hands?
With even perfect (99.9th percentile) wood, I can’t really drive it in very hard, because my slightly upcurved cock will suddenly bend upwards, folding at about halfway along it’s length. At least this is true when my cock points upward (my palm pressing downward, me standing). If I pull my cock to horizontal or slightly below, pressing my palm toward me, then I can drive my cock into my hand with considerably greater force, until finally it folds, either upwards as before, or better since it doesn’t fold as severely, it folds in the opposite direction, downward. At the correct angle away from my body, the two folding tendencies are about equal and I can really drive it in hard. If it folds in the less usual, downward direction, then even with it folded, I can still generate a lot of force against my palm.
I guess there’s a lesson here for the aspiring cocksman, at least one not blessed with one of those wonderfully ramrod straight members: lovemaking position matters, particularly when first entering.
I think that most PE techniques (jelquing, stretching, edging and the like), and certainly a lot of masturbation methods, don’t really do anything to build PQ, and that some may actually act against it. Possible exceptions are PE methods aimed at increased girth, and I suppose those (not very well spelled out) methods to counteract natural curvature.
One technique that bears mention is the Uli, since the action there is not completely dissimilar to the ‘palm’ test I mention above—working with the bending of a nonflaccid cock.
I don’t pretend to know quite where I’m going with this, and would welcome discussion. I do know that I’m going to stop using any masturbation technique that ‘rewards’ me with an orgasm while my cock is anything but rock hard and able to exert penetration force, and I’ve also encouraged my partner to expect this of my cock too.