I don't think there is any permanent fix for growers to transform into showers. Correct me if I'm wrong, every grower has a flaccid penis that fluctuates. There are times when my flaccid hangs gets to 6.5 inches and 7 inches and there are also times when it shrinks to as email as 2 inches. It all depends on most of the factors Redzulu mentioned about from anxiety, to body temperature, weather and etc. One thing I found that worked for me in the past was doing Kegels like my life depends on it and always staying elongated with the ace bandage at all times.
As you grow in erect length, you will also grow in flaccid penis but this will not stop you from being a grower. I personally don't bother myself about my flaccid size and that's because my flaccid size is not what I'm using for sex. For me, it is all about erect length.
My 2 cents.
