[Christ]

Not worth it, honestly.

But, in lieu of cleaning off the blanky, just leave it strapped on there lol.

Cool thing about lots of snow buildup on your car - opportunity to see how your cars shape affects airflow, and what shapes you should attempt to achieve when going for aero mods. Don't do this on the highway... FTA says its' illegal now. So does NHTSA.

But honestly, you don't actually lose enough heat through your hood while sitting to worry about anything, it will become more hassle than it's worth. If you're really worried about it, try a one time thing: Aluminum foil and roofing felt.

Remove the "blanky" from under the hood of your car, apply roofing felt en gappe (in the gaps) between the webbing. Make sure to cut the pieces to fit perfectly, and put them in place with some temp-resistant adhesive. Then, take alum foil, or if you're feeling really expensive, get some of that stuff they make balloons from...

Use thin contact adhesive (heat resistant) and glue it to the hood's blanky before pinning it back up in place.

Principle: We all know heat rises. The roofing felt further insulates the hood, the foil is reflective, so it will reflect the heat back toward the engine.