I certified level 2 today at the DARS monthly high power launch in Gunter TX using an Aerotech J250 on my trusty old Madcow DX3 4". Special thanks to George and Sam for all their help and advice. I originally was going to attempt the certification with a two-stage but it's not 100% ready and this was hard enough as it is. I used a StratologgerCF to handle dual deployment with motor ejection as a backup for the drogue. After the flight, the altimeter beeped out 3,700 feet which was about perfect. Openrocket simulation put it at 4,097 feet and thrustcurve predicted ~3,500 feet.