Just my observation
Well I have made a few observations in my short PE adventure.
First off I hear a lot of people talking about either not making girth gains or losing some. Well as I understand it if you don’t gain girth but you are gaining length then in actuality you are gaining girth. I know that sounds confusing but let me put it like this. When you hang or even stretch you girth gets smaller. Using this as an example then when you gain length your girth should get smaller. So if your girth stays the same when you gain length then you are actually gaining girth. Even if you lose a little, as long as you are making good length gains you are probably still making girth gains just not proportional to your length. ( Still a little confusing maybe someone else can read this and put my thoughts down in a more understandable way)
Second you hear people asking how much you can gain. I think it is more a matter of how big can you get it before it no longer works. If you look into the history of PE some tribes hang rocks or heavy objects from there units to make them extremely large. They get so long in fact that they have to tie them in knots to keep them out of the way. But they can no longer get erections. So with this said I think as long as you have the drive to continue with PE there is no limit to how big it will get just how big you can get it and have it still function.