"...bad circumcisions that remove so much of the skin of the penis that the scrotum is pulled upwards by tension."
Is there such a thing as a circumcision being done that tightly? If so, and the balls were riding high on the hog, so to speak, I don't think there'd be any turkey neck present at all since the skin would be so tight. Wouldn't it?
"...you can do some foreskin restoration to add skin and relieve the tension that is pulling your scrotum up."
In foreskin restoration, aren't you pulling your shaft skin foward over the glans and taping it there? When an infant is circumcized, isn't the foreskin pulled foward and snipped or something? So then wouldn't doing "FR" result in making the balls "ride high" on the shaft as in a "tight circumcision", thus creating a turkney neck like you said it would? If you're already circumcized, there's much less skin to work with, so by stretching it to regenerate a foreskin wouldn't you just be replicating the "high balls" effect of a tight circumcision? Even if it did, I can't see how a turkey neck would be created since all that skin would be tight.
To not get a turkey neck, I don't see how stretching more skin could be an answer. I think the best way to keep it from worsening would be to "tie back" your scrotum with a soft string or one of those ponytail thingies to keep that skin outta the exercises and keep it from being pulled into a jelq stroke.
What do you think, kong?