I guess this just popped into my memory from when I asked about the Jacks River Trail back in June. This week, I did an overnight of the "Penitentiary Branch Loop" for the second time since then, and didn't remember any details, context, or the fact that this post was from 2016.
Anyway, I don't know if it's even of interest to anyone, now, but the quoted part is what stuck with me, so I was looking. Was already past the junction on the map, but was looking across the river where the Jacks River Trail and Sugar Cove Trail parallel each other.
There's a campsite across the river that's easy to see, and at a spot that would be easy to cross.
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I got the best spot this time, with its own little waterfall, private beach, and swimming hole:banana
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