well not much interest in this question! for those who work birds rather than sit in a blind, setup is really key to success. knowing your effective range on shotgun (40 yds is my go too) is my starting point. Yes, located uphill or high ground gives you some advantage, on a rise where 40yds is the edge of your sight line. my setup is to first see the bird at that 40 yd point, same for a dirt road/game trail corner, effectively bird is dead when you first make contact with it and you can let it slip in until you have had the show or it gets nervous and you dont dare wait longer. ground cover trying not to outline body, shaded hiding spot, sun to back is important too, i even put some front brush if i have time to mask movement. i bring brush trimmers to help with this. one final thought, i absolutely carry a thick foam cushion to sit on and be comfortable for this adventure. some of the vests really come with cheap seats!