Hello! I have only being paracording for a week, but I am addicted! I have made two dog leads and a collar. This morning I read about shrinkage and am now re-thinking the collar in case the dog goes in the river and the collar strangles him. I saw a video on You Tube where the cord shrunk by 6inches, do you all pre shrink your cord? Is there a manufactured pre-shrunk or non shrinking version?