So, before I saw the post by Buckvelvet, I was going to say, "I like to make plots that are long and not too wide"...but that seems grossly inappropriate at this point! :D
Seriously, I think adding "fingers" to plots is a very good idea. For those who have set up decoys for diver ducks, it's almost like the classic "J" hook layout, where deer will hit that long finger, or trail of food, and follow it to the larger section of the plot. On one property we have plots and trails connected in an almost continuous loop around an area about 6 acres in size, with the actual plots making up less than half of the area. This is a subjective thing, but it "seems" like bucks travel around in circles, monitoring the different plots and trail sections. it offers several good locations to bow-hunt, but is mostly set up for rifle. I think the shape of a plot is not nearly as important as the overall size and the amount of cover adjacent to it.