Shine as little light on the bank as possible at night. I have gotten to where I don't even use my blacklight and even use Flourocarbon line not flouroscent. If you must use a blacklight, the intent is to help you see your line not see the bank. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.