I prefer lean-to's.
I live in Oregon, so there's plenty of wood around here. When we go camping, sometimes we just bring a couple blankets, and make a big lean-to. Tents are too luxurious. :biggrin:
I've built lean-tos with palmetto fronds on top. We have plenty in FL. They also give that tropical look, so you feel like you're camping in Cambodia. Feels like it in the summer, too.
favorite field shelter is a tent that I hope to have with me. I like something that can keep uninvited things from sharing my sleeping quarters. If I did not have the tent however I would say a lean to because it is pretty simple to construct.
if i have a tent i use that. if you have a good tarp, the possibilities are endless. but if i lost my ruck somehow, a lean to with a reflector fire is pretty comfortable. but you know ol' boris. i aways try to have something with me. even a trash bag can b use to help construct shelter. why i carry a big roll in the van