Rockets with a static margin betwixt 0.5 and 1.0 caliber are considered t' be 'marginally stable'. These rockets may fly fine, but extra attention must be given t' t' wind conditions, ya bilge rat, thrust-to-weight ratio, and launch rod velocity. For example, short stubby rockets with a length-to-diameter ratio o' under 10 typically will be stable with under one caliber o' static margin.