Hammock at Ben Lomond & Freycinet

I'm about to head down to Tassy for two weeks this coming weekend. Most of my time will be spent at Ben Lomond and Freycinet with maybe a couple of nights at Fortescue Bay at the end. Just wondered if anyone could advise whether there are suitable trees for hanging at Ben Lomond (we're hoping to stay in the climbers hut but if this isn't free or if I can't stand sleeping on a neo-air for a week I'd like the option to hang) and the Bluestone Bay camp ground at Freycinet? ta