I don't actually own a gl2, but i've used one so many times that i know it inside out. For skiing, I usually set it to normal 60i, not 'Frame mode', and stick with a high shutter speed (1/1000 or higher) This is best for making slow motion in post. set the white balance to natural light, and lower sharpness by two or three points.
Thats the best i can do off the top of my head. play around and see what works.