Re whiting? Bleach? Does it really matter what ur lines look like? I woud clean the kite with morning fresh.................. Will be using it on mine this weekend to get rid of the salt stains.
Just chuck your kite in the washing machine it works fine, use cold powder so the temperature doesnt wreck the bladders etc. and make sure you seal them all. Put em in for a 30 minute wash and spin cycle, works a treat. For heavy stains use Napisan.