Answer Wiki. The system would be cued off the pilot's helmet, so it will definitely look where your head is pointing, not your eyes specifically (that would be a gaze-tracking system, which AFAIK hasn't yet been used for this kind of application).
Exercise to Gain Leg Weight. Although you can't make your body gain weight in your legs, you can perform exercises that encourage the growth of leg muscle. Squats, lunges and step-ups are examples of such moves that target the legs and recruit a lot of muscle fibers for growth.
People who carry excess fat in the lower portion of their body, including the upper thighs, are often referred to as pear-shaped. You can't target your thighs with exercise, but a combination of strength training and cardiovascular exercise helps you burn calories for weight loss and tone the muscles in your upper legs. Talk to your doctor before starting a new workout routine.