Anyway,
Driving Directions
To go straight to Google Maps and just add your starting point, click here.
Otherwise...
From the 210 Freeway, Take the CA-2/Angeles Crest Hwy exit toward La Cañada Flintridge.
Drive about 35 miles through the windy roads until you reach Mile Marker 58.
Just past this marker on the left is a small turnout where you can park.
If you've hit Buckhorn Campground, you've gone too far.
Trailhead
The Trailhead is located further down the road, directly across from Buckhorn Campground. It is a fire road with a white gate in front of it.
The Route
If you wanted to bag Waterman Mountain first, you could stay along the main fire road all the way to the top like I did. The Waterman loop trial picks up just north of the large group of rocks at the summit (highest point) and continues east until descending toward a trail junction. Follow the junction to Twin Peaks.
Alternatively...
If you wanted to skip Waterman Mountain and reduce your trip by about 2 miles and 200 feet of gain, you could do so by taking the FIRST LEFT from the trailhead (small singletrack located 25-50 feet past trailhead).
After Reaching the Twin Peaks saddle signage, you would continue directly south past the downed tree which blocks the trail. Here, you will gain roughly 1200 feet in a mile to the summit of Twin Peaks.
And this is where it gets tricky...
As you will most definitely notice from the top of Twin Peaks, the rest of the route is in fact not a route at all. You will slide down screen fields, climb against flat walls with 20 foot drops below you, send loose boulders flying down into canyons, destroy your favorite upf 50 rated hiking shirt, and cry to your mommy before turning around because the 20 feet you just down climbed leads to a 100 foot cliff drop. This is all besides the fact that it is practically raining rattle snakes throughout the ridge.
Advice for the Ridge Past Twin Peaks
I think for the most part, I tried to avoid down climbing too much, and mostly stayed to the east side of the ridge for the first two notches. The last notch before you start ascending toward Triplet Rocks is where I started moving toward the west side of the ridge. The author of the link I provided describes this against the San Antonio Ridge Trail in terms of difficulty. I don't believe that is a fair contender as the SA ridge requires physical endurance, and Triplet Rocks will test you mentally.
Good Luck & Be Safe!
Resources:
http://www.everytrail.com/view_trip.php?trip_id=3117939 (my original trip report)
https://www.strava.com/activities/276238586
The view from Waterman Mountain.
The First Trail Junction.
Twin Peaks Saddle
Signage at Twin Peaks Saddle.
Almost THere
So CLOSE!
awwee Yeah!
what are you? Jk Rad trip report and pictures! 
