The guys I fly formation with were ask to fly over a Opioid Seminar this weekend. Planes were 1 RV7, 2 RV 9, and my RV12. With dissimilar performance we slow down for my LSA and practice with @ 108-110 knots and no more than 20 Degree bank turns.
https://youtu.be/8iZjknrFgRU
It was an honor to participate with my other EAA members