I did that exact trip, summer solo, some years ago because I was interested in the narrow slide that's so visible running up toward the Beckhorn.
It was a great trip. Here's the beta:
I followed the "Hunter's Herd Path" along the Boquet (the descriptions in the adk guide for this path are outdated; I can give you a lot of detail).
The trail passes the so called "Rock of Gibraltar" at 3.1 miles, and then shortly thereafter turns down and left to the bank of a brook. There are two roughly parallel brooks here. The Easterly one is the S Fork; the Westerly one (which you come to first) is the tributary that flows from Dix.
Follow the Dix tributary as it runs SW and then more W. The brook bed will widen into flat rock slabs that make for easy walking, and will bring you into a more open area near the base of the Beckhorn slide.
The slide itself is pretty moderate. It's narrow and quite dirty. There is a cliff barrier about 12 feet high about halfway up, which I bushwhacked and clambered around on the left. Towards the release zone the last bit is a little steep. Climbing shoes might increase the comfort level.
The slide ends near the top of the ridge, but there's still about 150' to bushwhack up to the trail. Needless to say, there is no herd path at the top of this obscure slide. It was about the toughest 150' I've done, crawling, swimming, you know the deal.
I actually went back down through the woods from the Dix Hough col, but it might be easier to return via the Round Pond Dix trail (which will give you about a two mile road walk). If you want a longer trip, you could return over Hough, South and East, and down the East Dix slide (shallow and a pretty easy walk down). The East Dix slide dumps you directly onto the end of the "Hunter's Path" for your trip out.
Looking forward to the report!
TCD