Cross grips give additional stability to larger chunks. The second inside chunk person should have a slot to the front floater side of the first person in the door. This person is in charge of and leads everyone to a successful exit. The center floater must move during the exit count to let the front and rear floaters key in on the exit timing. Make sure everyone can see or feel the exit motions.
Timing is the key to successful exits.
Have someone who wants to spot, spot. Avoid yelling and screaming on the aircraft. Some formations are easy to launch because everyone is naturally presented into the relative wind. Other exits funnel because of poor timing. Ensure that everyone is in step with your key exit person.