I went through the Boost program in 2016 and it was one of the best experiences I've ever had. I met some of my best friends there, and their motto (be the cockroach) drilled survival into me at a time when another incubation program had left me confused about business priorities. Whenever I feel like I'm slowing down or confused, I still use their Wednesday dinner format and find a group of peers to bring myself back on track and up to speed.
It was very informal, and Boost would barely moderate it. But it was always incredibly helpful to talk about our problems, and we'd always want to share better metrics the next week. Getting peer-feedback was great too! The sessions would never last very long, either.