Haaa ^^ yeah if you are fortunate enough to have pure sand or grass at yout local, it will help the longevity of the kite too.
Lines are a mysterious thing, rated to huge strength and your never sure how long they will actually last...
We worry about bar line breakage - though truth is, the kite bridle line is tiny on some kites and you never change them at all... death loop fear marketing at its best lol