I already own a 0 degree Incubator with overfill which I completely failed to use properly my first time out. I'm becoming a more educated hammock camper and in doing so, I learned that even in summer (when the temperature can drop below 60 degrees at night) I need some insulation.

I'm considering a Kifaru woobie as a piece of lightweight insulation and I'm also considering buying a 40 degree Incubator.

Assuming I've saved my pennies to buy a second underquilt, would I be crazy for buying a second underquilt for 3 season camping?

I'm weight conscious but not to the point of being extreme about it. Oh wise hammock campers, can you help a newbie out?