Whenever I am in the stand and its dark with deer all around and I need to climb down out of a tree or tripod, I will do the following: I cup my hands together around my mouth, face a different direction where the deer are and I "snort" (blow) like a deer giving off an alarm. I will snort about 5 quick burst and that will get the deer to run off fast. Then I get down out of the tree quickly and leave. This seems to not frighten them too badly. Does anyone else have their own method to frighten off deer so you can leave quickly instead of sitting in the dark for an hour?