Just to add a few notes of reality:
The webbing is the same width and material as a seatbelt in a car, I don't think in inches but it must be at least 2 inches if not more.

The Hennessy is not designed for campgrounds. I've only ever stayed in one campground (an Ontario provincial park--there was no regulations against it though finding a site with trees was more difficult).

The Hennessy is a dream for stealth campers. Stealth camping is when you camp for one night on unsigned, unfenced unimproved public land out of sight of a house without approval. I'm just back from 2 weeks in Britain using my Hennessy. Here's what I do: Instead of trying to find a campground close to my route, I just looked for a great pub. After spotting the pub, I'd search for a great stealth camping site. If none was available within a couple of kilometres, I'd go on to the next pub and start the search again. Once the site was found, I'd make supper in another location and then head for the pub for a few pints. About an hour before bedtime I'd go back to the site, set up and have a great nights sleep. I'd be gone shortly after sunrise.

No fees, no warden, no Winnebagos.

As to the mosquito bite question, I also use the Hennessy in Canada. Yes, mosquitos can bite through the bottom of the hammock. Use a sleeping bag or a sleeping mat to make space between you and the bug. The hammock screen works great as far as keeping them out of the hammock.