Keep an eye out for the entrance to this trail which is just before the "Luther Pass 7,740" sign. The trailhead is off to the right (west of 89) and follows an old paved road for 0.2 miles. You then take a right turn on the currently unsigned trail. Keep an eye out! You could easily fly by it.
Once on the trail, you have a relatively easy climb to Scott Lake. You pass through one USFS gate (please close it upon passing through... cattle graze there). The trail spits you out on a fire road, which you take a right on and climb a little bit to the very nice Scott Lake which is a good place for a rest or a swim.