"Every day is a new day to a better future"
"Of all the things that matter, that really and truly matter, working more efficiently and getting more done is not among them." ~ Mike Dooley
"What if I told you that you couldn't have anymore of anything... No more friends, no more money, no more anything, until you first got happy with what you have?"~ Mike Dooley
"The only true wisdom is in knowing you know nothing." ~ Socrates
I dunno if its long enough, but for the blackbird it works great for me, tested it about an hour ago. The big agnes air core. I have the insulated one, i have the dual layer bb , i just slide it up in the fold for the pad, adjust it where I want, Bam, works nice. I let a lil air out so its not super inflated, but u can do it either way.
Somebody on here recommended using an emergency blanket for insulation. I tried it out with my Clark and it worked great, plus it packs down to nothing. I had a +25* bag with a Downmat 7 at less than 45*... and only socks and boxers. Slept fine. Don't know what a Yeti is though so not sure if this helps or not.