i searched the archs and was surprised not to see any posts on springback. how much extra rocker do you put in your shape to counter springback on clark/usblanks with polyester glass? i know someone is going to say that it depends on what type of glass you are using. lets say the standard 6/4 over 4 on a 6’6". is there is difference if you’re glassing double six, ha suddenly makes me think of old days in kuta, on a gun?