I just got a WBBB Double 1.7. I used an evazote pad, and a torso-length z-lite between the two layers.
The problem started when the head end slipped down. I woke up with my feet way above my head, while laying in the diagonal. So I get up, inspect my strap, triangle-D's, and "slippery half-hitch" (yes, I've watched everyone of Shug's videos). Nothing obvious. Head end is connected to a 30" diameter Doug Fir with carabiner. So I tighten up the head end,(in the dark), cinch down my slippery half-hitch and crawl back in.
Now I notice a pronounced ridge bisecting the footbox right at my knees. I reach up and try to flex the ridgeline and I can only get a 1/4 twist. I decide to live with it but now I have to twist for knee comfort and I notice that the tarp seems smashed into my face.
Fortunately this is a backyard setup, but I've only got 14' between hang points.
I'm having a tough time figuring out how to get the magic 25-30* angle without having the hammock dragging on the ground or using a ladder to set the straps higher. And I'm also not sure anymore whether I want the foot end or head higher.
Anyways, it wasn't a good night's rest. But I was warm and didn't have any pressure points.