i use a range finder but thats about as "high tec" as it gets for me. the area i hunt is a 70 acre "island" of woods and swamp surrounded by crop fields( this year3 sides corn,1 side alfalfa) so i dont need a feeder or food plot. i wear camo but notscent-loc(i do use the carbon spray). the only scents i use are coon pee on my boots and hs scent waffers( fresh earth, white oak). i usually climb 20 - 25 feet up and the deer never notice me, even after the shot.i also use a buck grunt, more so in early season than late.