RE: Question about late season
I press on the membrane about 1/4 of the way down from the mouth end... making what would amount to be a younger buck/halfway mature doe sound. I use it like this most of the time regardless of season, and have called in everything from does to 5 1/2 year old bucks.
I'll also "roll" my finger along the membrane as well, changing the tone midway through the call sometimes.