I agree a ton with what Len has said, even when you look at guys that are indoor spottie shooters only they will vary draw length and form a bit depending on what form of indoor spots they are shooting. NAA (Inner baby X's, rest of yellow 9's) guys will shorten their draw length just a hair which will allow your float to be much smaller, however when you get an erratic shot they tend to miss a bit more but it doesn't matter because all of the yellow is a 9. How when they are shooting 5 spot, they tend to lengthen draw length a bit to allow for a slower more controlled float, however that float covers a bigger area. I vary draw length by about 3/16-1/4" of an inch between 3D/Field and spot/FITA rigs to help me "stay behind" the shots for up and downhill shots that field and 3D present. I also shoot a full half inch shorter dl for hunting than I do for indoors for those shots on really wacky footing and when your off balanced, etc like in a treestand.

Here I am in 3D form last year. I would imagine this is a bit more stretched out than Len likes for hunting.



Here I am in spot form, even more stretched out. Not much, but I am about 3/16" longer here and I am shooting the same model bow as the picture above. Look at my rear elbow position compared to the 3D pic. It isa touch lower and in line with the arrow. I float much slower with the stretched out form like the pic below, but it is difficult to stay behind it for up and down hill shots.