Did a search for the last year didnt come up with much on how to treat the mould once on your kite. didnt dry my kite after ktiting in the rain few week ago and now she has some discolouration. i want to remove the mould but im not taking brucex's advice of putting vinegar on it~! - isnt it acidic? So sorry if its been covered before but - advice would be appreciative. Cheers
Here's some advice from a sailing forum
www.sailnet.com/forums/gear-maintenance-articles/19829-sail-care-cleaning.html
Mildew Prevention is the best tactic, but if mildew has attacked the sail, treat it immediately and isolate the area from the rest of the sail to prevent spreading. Do not use bleach on Kevlar or nylon. All other laminates and coatings can take a weak chlorine bleach solution of one percent or less. Most bleach (sodium hypochlorite) solutions off the shelf, like Clorox, are a 5.25 percent solution and will need to be diluted. Some commercial brands of mildew cleaners like Tilex have three percent or less solution of bleach and can be used with dilution and a litte extra care. Lysol is a fungicide that when sprayed on the sail will kill existing spores and inhibit any additional growth. After the organism is killed, most of the stain can be removed by soaking (not scrubbing) in a fungicide for 12 or more hours. Always rinse thoroughly to ensure there is no bleach residue left on the sail.
It is possible to soak and clean a sail in a swimming pool, but this should only be done to polyester sails when you are sure that the chlorine or other chemical level of the water is within the tolerance level of the coating. Never place a Kevlar or nylon sail in the pool.
Another one
www.doityourself.com/stry/qnacleaning8
Q. I have mold on a nylon kayak spray skirt. How can I remove the mold?
A. Mold and mildew stains on fabric tend to be next to impossible to remove. At best, you can expect to lighten them. You may have some success blotting stains with lemon juice and sprinkling on some salt and place in the sun. An enzyme digester cleaner may also provide you with some success.
Soo - mild beach or lemon juice... they the only solutions? cheers kiteer33, however would also like to hear the tried and tested kite specific remedies. 
Cheers Galah (again) happy to try that, bit freaked out about putting any chemical on a fairly new kite!!
I had some mould removal experts on a job a while ago.
The best thing to kill the mould is sunlight.
That wasn't possible indoors, so they sprayed everything with a solution of alcohol and water and brought in the dehumidifiers.
Once the mould is dead, the stain still remains, you should be able to remove most of it with detergent, water and a scrub.
