Pmma in my experience adds girth, adds same amount flaccid and erect.
So it makes penis fatter, especially makes flaccid penis more % bigger than before.
Also pmma make penis kinda heavier and surely made me much more into a shower than a grower. Meaning also flaccid there is more flaccid length.
So this all would really help with bigger bulge.
But Bulge is hard to do i think, i mean you gotta be kinda gargantuas superlarge to have a prominent big bulge that other people clearly see in the trousers.