I was walking in Flatbush this Shabbos and I saw a Minion posted on a fence and I realized that this is the place for a Minyan!
In the Ave P and low 20’s area. (2 Minyanim) I’m sure if you ask around the Minion Minyan is going strong
There’s a (Sephardic) tented outdoor minyan at E 10th St between O & P (closer to Ave P), right across from Yam Hatorah. Shachrit 8am Mincha/Arvit 7:30pm on weekdays
Rabbi Aharon Kahn’s shul on Ave J and E 18th doesn’t have an outisde minyan but those who want to daven outside can ask the back door in the driveway be open by knocking on it and people could sit under the tent in the driveway.