the best tip i could give you about duck hunting is that if you dont really know the different types of calls...especially if hunting on water...is if you see em quack at em once to get there attention and let them do the rest....chances are 9 times out of 10 their gonna come in or at least get close enough for a shot...and with 2 dozen deeks i would say set them up in a rounded of w. that has always been the best set up for me in mn and wa. good luck and happy hunting!