Minimum speed flaps up- just above the minimum speed flaps up marker. Descent angle is approximately double idle engine descent angle, so max still air range from cruise likely to be about 60 miles. A 360 degree turn uses about 7000' altitude, aim to cross outer marker about double normal altitude, taking flap and gear as appropriate. Don't be low. Anything down to full flap if you are high. Full controls available right down to below Vref, use speedbrake if needed. Last resort is the traditional sideslip. Makes a real fun simulator session! Very few failures on it, almost everybody gets in. Furious mental calculations are needed though. Don't aim for long straight in- go for a base leg you can adjust.