I recently spent a few days on La Palma and took my modified Hunker with me. A friend of my wife fitted a 4' long zip down one side of it and it really improved its usability. I camped out twice, both nights were warm, no wind and in bright moonlight. The zip made it so easier to get in and out of and it made getting organised so much easier. I just put down my groundsheet, laid my Thermarest Prolight on top, then the Hunker. I undid the zip pushed my sleeping quilt into position and I was ready to sleep!
My Hunker is the standard sized version which fits me well, but to really improve my lot the Hunker XL with a 4' zip would be an even better purchase, giving me more room to move around in and be able to store some items of clothing in, etc as well. A great way to stealth camp. I personally felt so much better knowing that if I opened my eyes I could see ahead and around me, rather than be entombed in my tent just making decisions based on noises.
What was so great was to be able to turn onto my back and to look directly up at the stars, looking at them fro 7000 feet up was truly beautiful and 'out of this world!'
I took my Alpkit 3.5 Tarp as well. I never erected it, I just tucked one of the narrow ends under my rucksack, which was just behind my head, the rucksack weight secured it to the ground and my plan would have been just to pull it over my head if it rained. It didn't so I was unable to test it.
Added together, my groundsheet, inflatable matress, Hunker sleeping quilt and Tarp was noticably lighter than carrying my tent