The construction by LP looks nice, but Barry's right, the re-entry of previous ones doesn't fit if the compo is scene-related.
And aGP has a point too. Yep, why no adding an entry yourself, Barry ?

A variation of LP's concept about a second entry from one author could be, that the author defines own entries in a certain order.
So f.e. the 2nd entry is A, getting 100%, first entry is B, getting 80%.
But I keep some doubts about this validation. If I enter a second entry, I don't do this to increase my chances of winning.
It's just, that I have a second idea of how to deal with the material.
As soon as a piece is published, it's the song that scores, not the author.
OT: About the term "compo". Before I found this forum, I used this word as a short one for 'composition'.
Then I found out that on the MPF the term was used to indicate a 'contest'.
So now I'll have to be aware of the difference.