How do they take those movies of skiers winding down the slopes? Professional photographer Red Allin does it this way. He attaches his camera to his helmet (for a total weight of 18 pounds) and takes his pictures while skiing with his subjects.
He is shown at Mount Snow, Vt., while shooting a ski-safety film for Aetna Life Affiliates of Hartford, Connecticut.
In modern times you would probably use a Go Pro such as this one sold on Amazon (affiliate link).