When you're operating on the maker's schedule, meetings are a disaster. A single meeting can blow a whole afternoon, by breaking it into two pieces each too small to do anything hard in. Plus you have to remember to go to the meeting. That's no problem for someone on the manager's schedule. There's always something coming on the next hour; the only question is what. But when someone on the maker's schedule has a meeting, they have to think about it.
For someone on the maker's schedule, having a meeting is like throwing an exception. It doesn't merely cause you to switch from one task to another; it changes the mode in which you work.
Posted this on Twitter yesterday, but it's a link i want to keep. Even though i'm chained to a managers schedule, I still need to do a lot of making (decks, emails, strategies, etc.). That's why i try - at least a couple times a week - to get to my desk by 5:30 am, so i've got 3 good hours of unbroken work for sustained concentration and, when all is good, "flow". It's hard on the sleep patterns, but good for my psyche since it feels like i'm accomplishing something meangingful (even if it is just a plan to get more banners in front of you).