I took a "hike" from the Hoodoo TH a few years back. June 30th 2009 to be exact.
First, don't get confused over the location of the trail head. When you round Hogg Rock... watch for the turnoff to the Hoodoo Ski Resort on south side. The next turn off, 350 ft east of this turnoff leads to a winter play area with restrooms where you might want to make a pit stop.
The turnoff to the 3FJ trailhead is precisely 1,800ft east the turnoff to Hoodoo Ski Resort road (NF-2690).
Hogg rock is an interesting feature... seehttp://en.wikipedia.org/wiki/Hogg_Rock
Lesson #1 - the mosquitos are EVERYWHERE! Fresh melting snow means LOTS of them! I recall the extreme frustration just trying to get my pack ready, while dozens of mosquitos were attacking me in the parking lot. I ended up sitting in my confined car - trying to get my pack ready. Even then several moquitos followed me inside and had to be be dealt with!
Once on the trail - I had to STAY moving or the mosquitos would move in fast.
Lesson #2 - I went in on June 30th. Half the trail was still under snow. So the trail was lost soon enough. Wear good waterproof boots and blaze your own path toward 3FJ.
Lesson #3 - Being offtrail, I went high on the ridge leading to 3FJ. A better approach would be to stay low and arrive at base of the mountain - THEN climb upwards.
From where I stood on the ridge near 3FJ, it didn't seem inviting to bush-wack down and re-climb.
BUT... with the trail under snow there wasn't any good options.
Conclusion - do the hike in late July.