Park at the Great Divide Lodge, roughly 11km past the Icefields Parkway junction. The route to the lake follows the summer hiking path and is quite clear. Once at the lake, it is possible to evaluate your options. The avalanche runouts  on either side of the lake can provide some decent yo-yo laps, but if visibility is good, head north and up the benches to get some great views and nice alpine skiing. The Phantom couloir is also back here.