I think it is quite difficult to argue on the internet, there being such a large amount of misinformation and/or omission of information.
However taking someone into the field to actually look at the rocks will quickly result in their understanding they have been lied to by creationists. It's what happened to the ICR lads who went into the oil industry. Something about reading a book or listening to someone explain something that is very different than having to think and solve that problem yourself.
Largely the YECs who show up here have never actually had to solve a real world problem in geology or biology. If they did they would know how inane they sound.
As far as evolution goes I like to use the 5 great extinctions (End Ordovician, Late Devonian, End Permian(96% of marine species gone and about 70% of land species, End Triassic, and End Cretaceous) After each, over time, many new species were evolved replacing the lost biodiversity. Was each of these a "special creation" or is there just some natural mechanism at work?
Have a look at the graph of "shelly" marine families at the bottom of this link.
Page not found | Department of Earth and Environmental Sciences
Pretty hard to claim that after every time families were lost, God started creating new ones.
But like RAZD I don't think it will make any difference here. It could with the lurkers, but we'll never know.