This Forum Post includes GPX Files for both the Winter Route and Summer Trails to reach the Watersprite Lake Hut (Links to download the GPX file are at the bottom of this post).
The Winter Route GPX file begins at the Skookum Power Generating Station, and the Summer Trail GPX File begins at the Skookum IPP Water Intake Dam.
A Driving Instructions GPX Track from Squamish to the Summer Trailhead is also included.

