It varies a lot. Some days it's about 2 hours, on my most productive days its nearer 12, but that can't be kept up for many consecutive days. My hypothetical

It varies a lot. Some days it's about 2 hours, on my most productive days its nearer 12, but that can't be kept up for many consecutive days. My hypothetical ideal is for most days to be around 4hrs emphasis on planning, coordination and preparing for flow, then if I don't hit it, just go home, otherwise work as long as it makes sense.