Somehow I usually launch at some roll angle and slightly up. When I run and push the plane hard, I lose the accurate orientation. It seems that doing it easier but focusing on the orientation. Now I remember that in these two crash cases there was no wind at all. It always quickly recovered when I launched into a 10MPH wind, regardless of my mistakes, so speed is an issue.
Future plans: Add ailerons and steerable landing gear, or retire it and move to a better design (e.g., Avistar).