Only when I'm spot lighthunting at night driving through cut fields. Other then that I like to go in the woods without one. It's more exciting to find out half way up your tree you really did put your stand together with just feel.

No seriously, I prefer no light at all. If you do wish to use a light feel free. It doesn't bother the deer one bit. They are very use to light shinning through out their territory, so you flashlight won't affect them a bit. They are more affected by your sound walking to your stand then anything else.