Amy and I have descended all or portions of Goddard Creek canyon down to the Middle Fork Kings on three occasions. The first trip was a descent of the entire length of Goddard Creek from Martha Lake. The next trip was down Enchanted Gorge to GC and then on out to the Middle Fork. Finally we descended the White Divide from Tunemah Peak to point 10987 and then down the northeast slopes to the lower sections of GC and again out to the Middle Fork.
Yes the lower reaches of GC are brushy. However with perseverance, they are passible. You need patience and a willingness to backtrack occasionally when an intended path gets too thick, At times, you can follow the creek itself, either rock hopping or wading. We found that, on average the west side of the creek was easier passage than the east side. It was also easier the further away from the creek (upslope) you go. Crossing the Middle Fork shouldn't be a problem unless the water is high from snow melt, which this season doesn't seem too likely. The area where GC meets the Middle Fork is also littered with debris washed down both watersheds and there are often logs that span the Middle Fork, so, with luck, you could keep your feet dry. You can also find useable campsites in the area, but camping would be difficult further up GC.
How bad is the bushwacking? It may be the most difficult we have done in the Sierra, but it is certainly less so than some areas in the Ventana Wilderness in Big Sur. And if you don't let it destroy you mentally, look around and you realize just how spectacular the surrounding area is.
Enchanted Gorge itself is an amazing descent. Totally wild, remote, and unforgiving, but a quintessential Sierra off-trail experience.
Another option for returning to Road's End with a fine cross country walk is to descend Murro Blanco along the South Fork Kings from the JMT to Paradise Valley. This should be done in low water, so depending on snow melt, it may not be passible early in the season. Its not as difficult at Enchanted Gorge, but is still challenging and is absolutely stunning countryside.
James,
responding for Amy and myself