Jakes facing you, hen facing away.
Basically, the gobblers will approach the jakes from the front, facing them, allowing you the opportunity to draw unnoticed, or they will approach the hens from the rear (for obvious reasons) thus allowing you to draw unnoticed as well.
The farthest that I run a deek is 12 yds. When running multiple deeks I run 8, 10 and 12 yards. Any male deek is ALWAYS placed facing the blind..UNLESS!!! You expect the birds to come in from behind you!!! Which is hardly ever the case. This year one hen and one jake set up has been yielding the best results. Been a weird start to the spring for us. Tornado's, hail, 60+ mph winds, rain ... AWESOME!!!
I am with Justin....I typically have my decoys facing the blind, especially the hens. Also, I never put a decoy over 10 yards when bowhunting. If shotgunning, 15 is probably fine, but closer is better imo.