This may not be what you are asking for:

1. Know the water and the depth
2. Remember that snakes will also be out
3. Try to get to the water before it gets dark and memorize the territory so you do not step in over your head
4. If you go when there is a clear sky and a full moon, you will be able to see better and will be surprised just how good your night vision is.
5. Avoid turning on any lights because the light will destroy your night vision & spook the fish. If you must use a light, try to use something with a red colored lens cover
6. As stated above, dark colors for the flies and large enough to move water when stripped
7. Keep your ears tuned for fish feeding on the surface and cast towards the sound

Not knowing if you will be fishing lakes, ponds or streams, some of the above may or may not apply.

ABOVE ALL ELSE, BE VERY CAREFUL!