JVQ, I have to over-think it, or else I write a crap story. I don't plan things out on paper, my writing is very much an intuitive improvisational process, but I still want it to be a good story. If I write enough of it to be able to tell that it's not good enough, then I abandon it in favour of something else. Either a new draft, a new revision of the story, or another story entirely.
The problem is with those examples is that I am not actually interested in exploring a strict alternate history where JFK screwed up with the Cuban Missile Crisis, or for that matter where he didn't get his head blown off. I want something with a taste of actual science fiction behind it, something a little more fantastic than mundane history, even if it isn't our own. Otherwise, it's not interesting enough for me to commit to it. If it hadn't already been done to death already, I'd do something about dragons. And one of my earlier ideas came too close to blatantly plagiarising ideas from
Doctor Who (which was a pity, as it was an excellent concept, and I might be able to rework it to something good and original if I can find a new angle that works). The one after that, the one that I really wanted to do, based on the Quatermass serials of the 1950s, has now evolved into something that I can do in a futuristic setting, but not an alternate history (or at least not up to 80K words).
My current story attempt, such as it is, is a biopunk story that owes something to the
Bioshock games (I recently read a novel prequel to the
Bioshock games, and enjoyed it). Problem is, it needs no less than three major trouser leg diversions in order to be remotely possible. And I'm not sure it's going to be of good quality anyway, as I don't have an actual plot per se, just a bunch of concepts and characters. At least one of whom I have pilfered from a fantasy series I intended to write, and which I feel uncomfortable about, as the character was actually better in the fantasy series. Let's just say that the character was based on a mythological creature originally, and that being transferred to a realistic scenario prevents a key aspect of that creature from being used. And no, it's not a dragon.
I think the best thing for me is to leave this current work alone, and consider alternatives for the contest that are within my capabilities as a writer. Not that there will be, realistically, but I want to try. However, I do want to get my other books written and published, and between working on books that I know have potential, and wasting a year again on a book that I won't consider good enough for the competition, well, there's no contest, is there?
And I have seen that
Red Dwarf episode.
Tikka to Ride. Pretty damn funny.
And it's a pity they didn't keep the original ending on that episode, involving the lost curry, a booby trap set by Rimmer, and the rear end of Starbug.