Been using these as my ground sheets for years - Grabber Outdoors Original Space Brand All Weather Blanket: https://www.amazon.com/Grabber-Outdoors-Original-Weather-Blanket/dp/B002CQUA28/ref=mp_s_a_1_3?dchild=1&keywords=Grabber+Outdoors+Original+Space+Brand+All+Weather+Blanket&qid=1602883729&sr=8-3
The Heatsheets like the link above are thin, about the same bulk as a regular mylar space blanket. I keep copies in my first aid kits now.
The thicker ones are handy too. I keep one in my hiking bag. Cheap enough I don't mind using it for a ground cloth. I've rigged it for gear shelter, draped it between the tent roof and the rain fly in a blizzard for extra warmth, caught snow for melting and rainwater, and improvised an underquilt for hammocking in the cold. Seems to be holding up so far.
Grabber 8313AWBGR Outdoors Original Space Brand All Weather Blanket: Olive, 5 Feet X 7 Feet, Box https://www.amazon.com/dp/B002CQUA28/ref=cm_sw_r_other_apap_bfkw8wzxweRoe
I'm the OP. I used these... Grabber 8313AWBGR Outdoors Original Space Brand All Weather Blanket: Olive, 5 Feet X 7 Feet, Box https://www.amazon.com/dp/B002CQUA28/ref=cm_sw_r_other_apap_bfkw8wzxweRoe
Looks a lot like: https://www.amazon.com/dp/B002CQUA28/ref=cm_sw_r_cp_apa_i_pFleFbQHJ2CW9
I got the model down from this one. The cheaper one and seam sealed it myself. Also put a nice waterproof layer over the tarp, but it's perfect for my pack, no problems getting in and out of it and I don't have to worry about the spiders crawling into my mouth at night....
Edit: This one -- and it appears to be on sale right now. I couldn't tell really any major difference between this one and the Trekker: https://www.sixmoondesigns.com/collections/tents/products/skyscape-scout. I also had to get rid of my hiking poles in favor of their carbon poles (they fit better in the pack and reduced the weight even more).
For the tarp, I swapped out my 6x8 camouflage for two 5x7 (yes, 2!) casualty blankets instead: https://www.amazon.com/Grabber-Outdoors-Original-Weather-Blanket/dp/B002CQUA28/ref=sr_1_3/136-3362439-3277721?ie=UTF8&qid=1513256612&sr=8-3&keywords=casualty+blanket
(I'm not an affiliate). I found that these 2 casualty blankets actually folded down smaller and tighter rather than the 6x8 tarp. The foiled side helps to reflect heat better but the combo of both of them works as a backup shelter if anything happens to the tent. If not, I can use it for a rain or heat shield too. Lots off uses.
just fyi I don't think his was hooded
http://www.amazon.com/Grabber-Outdoors-Original-Weather-Blanket/dp/B002CQUA28