An incredibly well orchestrated combination of information from the leading thought leaders on startups as well as personal tips to help organize a work day to maximize productivity.
10/10 for Ash's quality post.
I found this post very insightful as I'm having many of the problems that were described (and will definitely be tying some of the suggested solutions). I'll also give it 10/10.
I would definitely agree with this. I'd say the most important element of maximizing flow are the co-founders. Co-founders have a mindset such that they are willing to contribute wherever needed. By sharing the trivial, non-flow inducing tasks, everyone will be able to set aside blocks of time for tasks that do induce flow.