Many of the guys here practice this with L-Arginine. L-Arginine boosts NO production, especially in 2-3g+ doses. In fact it's one of the major selling points to us Penis Enlargementing, and for the exact reasons you mentioned. NO in itself is expensive as fuck, L-Arginine is pocket change. As far as a better flaccid hang, maybe. I've always Penis Enlargemented while taking it so I don't know whether to attribute it to the L-Arginine or Penis Enlargement.