I just picked up some of the BlueMagic Headlight Lens Sealer at my local AutoZone, $6.99.Going to apply it to all our other headlights, but still have to figure out what I'm going to do about my StonGard covers........keep or remove...keep or remove...keep or remove.....
I think others found 303 basically washed off in the rain also, when it was on cladding. (On rubber, it's pretty long lasting).
Here's some good posts on 303:
http://www.vehicross.info/forums/sho...7&postcount=66
http://www.vehicross.info/forums/sho...0&postcount=67
http://www.vehicross.info/forums/sho...&postcount=125
http://www.vehicross.info/forums/sho...&postcount=132