Brad,
I use a pilotchute on all of my parachutes. My pilotchute is 10" in diameter and from the bottom of the skirt there are 8 lines12" long where they all come together. The connecting line to the parachute is approximately 11" long from where the pilotchute cords come together and is 10" from the leading edge of the parachute. I pack the pilotchute under the top panel of the packtray. I like using a pilotchute to pull the main chute from the packtray. Hope this helps you.
Juan