NoviStretch Bra from Novigo Designs. I recommend the mirror protectors too.
Call Andy... (302) 239-5387
Used them on all 4 of my 5th Gen Camaro's and kept them blemish free.
Now I have one on my Stingray.
90% of the bugs come off with a quick shake. The rest with a quick splash of water.
You can use it, rain or shine too!
DOES NOT hamper air flow, even with aeroplate installed.
Easy on, easy off.
I wouldn't use anything else.
If your state requires a front plate, check out my other post about my magnet mount procedure for the aeroplate and lisence plate...
http://www.corvette7.com/forums/showthread.php?t=377380