We stayed at Sock Lake October, 2015 coming from the west on the BRT. It is a sweet site, remote and private and a small perfect lake. The spur was a brushy but there was no trail finding issue at all at that time from Sock out to the trailhead at Mucker Lake. A nice walk in the woods. There were day hikers towards the trailhead end of Mucker Lake Trail. I believe it was a Sunday morning. I would like to stay at Sock again.
Unfortunately there was a mixup with the outfitter who was to have moved our car to be at the trailhead. We had no cell service and so road walked to Rockwood Lodge where a local couple (thank you!) gave us a ride to the outfitter we had hired.
Great hike on the BRT, though!
Photos are at Sock Lake. Yes, Scooter has hiked 1/3 of the BRT, the Snowbank Lake Trail, Angleworm Trail, canoe tripped into Lac La Croix, Gebeonequet, Frost Lake, Winchell, Stuart and many others. May-be you've seen him out there.