Jep,I'm a firm believer in fibre optics.I cant tell you how many times they've been helpful in early morning low-light and shady conditions.A cheap easy to put on but extremely effective set of fibre optics such as one of Tru Glo's gobble dot series will get the job done.I've personally used the magnum gobble dot for the last 6 or 7 years or so with great success.Heres a link to take a peek.......
http://www.wingsupply.com/shop/Scrip....asp?SKU=TG941