When I didn't write linearly I'd leave those scenes to the very last and then approach them with great trepidation when I couldn't procrastinate any longer. Most times though I'd surprise myself and they'd never turn out as bad a bogeyman as I'd built them up to be in my head.
Now that I've switched to writing linear for the sake of my poor betas...I just procrastinate.
I find that with any of these scenes I need to find my 'hook' and then I'm okay. That can be just a phrase or a starting line or a snatch of dialogue or a flash of someone making some gesture or taking some action in my head...just something. Once I have that, the rest of the scene becomes no problem. But until I have that hook...forget it.
And Diane -
As someone who tends to write in layers myself, redrafting a scene and adding elements to to it until I'm happy it's 'final draft', I appreciate that method. Haven't ever tried doing it that intensely though. It's actually worth thinking about - nothing is ever so scary when you've broken it down into its componant parts. Great idea! Wonder if I can persuade my Muse to try that one...
LabRat