Very good question. Here are the most often senario's. When it is sunny that usually brings up the wind. In the early morning the sun will glare off the water until it get's higher in the sky. You will find 10am to around 4-5pm the sun is highest to see. At nightof course you need light, but the wind is usually calmer and the sun is no factor. I like shooting during the day time best for my self. Nite is ok and typicaly you will see more fish. It is always a crap shoot any time you go. So many variables.