Apart from selling your soul that is, or any other personal strategies you'd rather keep to yourself. What I mean is, how much would you be prepared to change your novel to please a third party, if the stakes were high?
"Not at all!" we cry - but hang on, who's taking the financial risk here (unless you're self-publishing, which is another story altogether)? And who has the more knowledge and experience? As I blogged last week, a good title is really hard to find: I'd be grateful for any help I could get.
The title goes. I wouldn't be happy about seeing the book in a cover I didn't like: but I have even less skill in that area. So would I be prepared to hand over control of the MS completely?
Of course not. For me, the crunch point would be when changes stopped it being recognisably my novel, and that would be different for each book: the protagonist's name for one, the outcome for the other ... probably.
Or who am I kidding? Is anything sacred?
What do you think?