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Opening day, sit all day if the cover is somewhat heavy and you can't glass for hundreds of yards for a spot and stalk. Let the other hunters push the deer to you and through your bottleneck.
I've hunted over there for years... Opening day's great for moving around looking for a good spot and stalk. Everyday after that your best bet is to sit in one spot and let everyone else push them to you. Sounds like you've already got the perfect spot for that. Also, something to think about is the weather... Accuweather, which in my opinion is the most accurate, says opening weekend is going to be in the 70's over there. The following weekend drops to the mid 40's. I'd go the following weekend. You'll probably catch the beginning of the migration and might have a better shot at some quality bucks that won't be on the move the first weekend... Something to think about. When it's hot, hunt high. When it's cold, hunt low. That's always worked for me over there.
You said you haven't hunted there for a good 10 years. Have you scouted it lately? Depending on what drainage you're hunting you might find some pretty badly burned places. Last years fires burnt a lot of ridges that I've hunted for 40 years. Which creek drainage you looking to hunt? Cougar, Bear, Benson, Perrygin, and Ramsey, to name a few got pretty toasted. Not totally, but some pretty burnt up areas in there.