t00l Delegated very well on SG06. I don't think you need to be there 24 hours a day.
There will always be moments of command gaps during a server, just like during a war. You do your best to address these and have key people to fill in gaps where you can. Kreug has consistantly done an excellent job but even he has gaps from time to time, so don't worry too much, do what you can do, get the right people helping you, and have fun.
When I knew I was going to have an absence ahead of time during AOTK II I temporarily turned command over to a race RM. Mutt did a great job of picking up the ball, as I knew he would for those couple of days. The basic plan was already laid out with some flexibility. Having initiative and some leeway he made the right decisions.
The key is having people that are able to make the call when you aren't around, and allowing them enough freedom to do so. Also, and most importantly allowing them to have fun doing so, alomng with everyone on your team.