Ellis,
Another thing to consider:

This is not a debate in the scientific community. It is a debate in the political and cultural community, because of certain ramifications. But among scientists, the issue is decided. The evidence does not get shakier, but gets firmer and firmer every few years.

Creationists cannot win the debate in scientific circles, because there is no debate in scientific circles, and because scientists have enough actual knowledge that the typical sort of 'evidence' and arguments that creation followers accept is recognized as transparent nonsense.

But "winning" is not their immediate goal in the usual sense. Victory for them is confusing the issues sufficiently that reasonable things seem extremely improbable and highly unlikely things seem almost certain.