I don't know about little bennett and hammocks but they do show a hanger (next to a tent) on the web page. My bigger gripe is the price --$21 plus some tax/fees if I recall correctly.
I'd rather drive up to Gathland state park and camp for free at the AT shelter (Crampton Gap) site or Washington Monument SP (or South Mountain Inn) and hike 3=4 mi and camp at Rocky Run. I can get to either one in about 40 min (I'm just below you in Montgomery Village).
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