First flight was successful! Flew straight and true and stable. Begad! Low and slow. Avast, me proud beauty! Lower altitude than simulated with D12-5. Begad! I may need t' adjust weight in simulations t' get closer results or adjust for real wind speed t' see how this affects altitude. Begad! Otherwise, it be a pleasin' flight and lots o' adults and kids commended how stable and how beautiful me son's rocket was.