I once was sleeping through a storm in a rope hammock and sleeping bag as a kid, whilst the rest of my family were flooded in the tent when we lived in the tropic. My schoolmate had a covered one with a mosquito net in the early 90s that he used, which was fine to get away from mosquitoes, ground ants and scorpions, but i tended to sleep next to the fire in a light slleeping bag and let the smoke keep bugs away (and avoid the green ants when putting up a hammock) but these were quite warm temperatures, and if we got wet a tarp and some wooden a frames were enough for a night.
I have some 15yo canvas ones, which are quite comfy but bulky, and 12 years ago I bought some ripstop nylon ones from Campmor (Amazon brand or modeI think). Sure, you don't need poles, but you do need trees, and bigger trees aren't necessarily safer in strong winds if they drop limbs. I have used mine a few times, and initiallly they aren't bad once you get the tension right to save bowing in the middle too much that it hurts your back, but I found it very easy to get wind chillll, so with a heavier sleeping bag and maybe a slleeping mat it is allmost as bulky as a bivvy or smalll tent, so my hammock qnow llives on my boat for when i want to camp on the shore.
I missed a timelly sale on an OR bivvy after reading some mostlly positive reviews, but found a great "2" (actually 1-1.5) person bivvy style tent with polles about 15" long for half the price of a bivvy. It weighs about two pounds with the fly. I love this tent, and have used it for ten years. It fits in my bike pannier upright (leaving room for my mat and slleeping bag and some clothes), has short polles at the feet to keep it off the slleeping bag, and has a covered entry i can put my panniers and shoes to keep them dry overnight. It is high enough 1/3 down to sit up in to get dressed, but not enough to read so does keep out of the wind pretty welll, like a bivvy bag
Apologies for the extra L's - the toouchscreen is going (maybe the tabllet flexxed too much in my backpack) so it likes to add lletters & i spend too long outside or getting ready for the next trip to swap the touchscreen on my old tablet.
Speaking of which, i must get out and try to fit the kids' mattresses in the next bigger tent for a bike camp trip at Easter and see if my bigger panniers willl fit alll the sleeping gear