I sold all my studio lights about three years ago, and even when I did have a full set of Bowens Gemini lights, I never really used them. I use one light, the big studio light in the sky. As for technique, it’s all quite simple – learn to know exactly where the sun is going to be, and at what angle, at all times of the day (this is a great website – SunCalc), study how clouds diffuse light and how natural and man-made objects can be used as reflectors. Understand that there are no rules – shoot into the sun, at midday and in the middle of the night and use the moon. If it really is too dark to shoot, then you should either be in bed or in a pub.