>>2286132>Bottom insulation can be solved with a sleeping mat and maybe a space blanket, or even a tarp to stop wind from running directly under your ass. Underquilts are overkill.Everyone starts with the sleeping mat and in three trips decides to go underquilt. At that point one either buys or crafts one from a cheap summer sleeping bag.
No mater what kind of mental gymnastics you are capable off there are still physics. A single person sleeping mat is about 75cm wide, generic hammock - at least twice as wide, hammock is more or less shaped like a spoon, pad is square and for all intents and purposes just a two dimensional rectangle that's somewhat rigid. When you put pressure on the pad, let the pad be on top or in between the layers it will have to fold in ways that contradict its natural two dimensional shape thus forcing it to slip to the sides and restore its squareness. It doesn't matter if you sleep diagonally - hammock is still not flat enough surface and mat is.
Now add your theoretical space blanket to the mix or some weird tarp and imagine the horror you will have each night trying to roll on another side while constrained by sleeping bag, keeping the pad straight and space blanket making crackling noises from the most minuscule motions even when you are lying still. Also its below freezing and you just hiked 15miles that day.
So no, you cant solve bottom insulation with a sleeping pad unless you dayhike in summer only. Underquilts are mandatory for all seasons, but everyone wants to flex how they repurposed their pads and its "good enough", its barely an upgrade for nothing at all and not worth its weight when hammocking.
> t. someone who spent 10 years perfecting the setup on a budget. Underquilts are not the most expensive part so stop larping and get one.> picrel spent new years hiking with a buddy - diy underquilt ($30) on the right bought one (~$60) on the left. 