I've been hunting blacktails for a long time and I've shot quite a few Mendocino County blacktails. Early mornings and late evenings are the best times although I've also been lucky around 11am. Hunt the moon phase, find their travel patterns, food sources, bedding locations. You can spot and stalk, still hunt, or ambush, but you need information. Be patient. If you haven't already read Boyd Iversons books on hunting blacktails. In the "sucks to be me" catagory I just lost access to the 3000 acre ranch I've been hunting for 20 years. Now I have to start over and pattern new areas.
Sixby, I hear you. I've killed bucks using that strategy. Come down on them from above while they're looking downhill in their bed, patient, slow stalking, with the afternoon upslope wind in my favor. That is my #1 favorite strategy.
Arc, where are you hunting in October? I've been going into the area around Lake Shasta the past few years for B zone after A zone closes.