I'm enjoying reading how others meet deadline! I have to say I tend to do things somewhere in between everyone.
When on deadline, I try to write a chapter a day (unedited). Then the next day I reread the last chapter to get my bearings. Once I write my chapter, I put it on the calendar, then I go visit the grand kids. :-)
I'm with Denise, you have to build in "life" time and I also give myself a month to read through and polish.
--a chapter a day (Monday-Friday)
--allow for life stuff
--plan time for edit and polish
When I have plot trouble, I deal with that instead of writing, but I have to figure that in on the deadline schedule.
So that's it. How do you do it?