Lots of glassing a day or two before the season opens, but I don't do any hiking through thick stuff. My goal right before the season opens is to locate where the herds are and possibly make a last minute change with where I set up my camp to be closer on saturday morning when the season opens. Ideally from a vantage point that let's me catch the entire herd out in the open within shooting range.
And of course I spend plenty of time behind glass looking for elk, and shooting them if they are within range. I picture that as the best-case scenario that we all dream of in the off season of knocking over a nice bull on opening morning. Just about every article you read in Field and Stream about elk strategy is going to talk about glassing for elk, and I don't think is anything new to any of us. Glassing is fun, doesn't take much energy, locates elk and gives beautiful views of the country... all good things... But I don't think that is a new strategic advantage that's going to help me shoot elk consistently year after year after year.
I only get an open country shot maybe half of the time, and it's usually within the first two days of the season when the elk are still in their regular patterns... just like Rifleman513 did on opening day last year. Once the herds get shot at a few times they stop moving and Monday and Tuesday are typically the most quiet days of the season. Knowing where they are in the timber, and how to hunt them there, is a huge strategic advantage for the times when the elk are simply not out in the open.