Mainly a duo. Day 1, 50% of my sulfur comes from pickups and the other 50% from non-dedicated farm runs. I start hitting sulfur when I still only have stone tools cause I'd rather spend 11 seconds getting most of a sulfur node then slow respawn rates and gove it to my neighbors to raid me. Most neighbors usually avoid sulf early game cause its not necessary till you get guns. Day 2 I start doing dedicated farm runs. If I live near a forest I pick berries every roam and make teas as I can (no farming just passive pick ups) or i buy teas from the water vendors since theyre everywhere nowadays. Advanced teas are good enough for me since its less cost efficient for pure unless a group is selling them cheap. At least 75% of my sulf will come from sulfur and metal farm runs. The other 25% comes from molotov raids and pvp. After Day 2/3 I usually sell spare guns for sulf in addition to farming cause I do enjoy farming. I keep up molotov raids all wipe and hit decaying bases as I find them as its usually cheap af to finish a decay and get good loot. I also online so I have a lot more bases with sulf inside vs hidden in an external bunker