Thanks to a useful tutorial found online, and the patient help of a GIS specialist, I was able (4th time lucky) to finally get HEC-GEORAS up and running and have started to process my survey files through that for HEC-RAS analysis. It has been slow, and at times frustrating, getting this going but now it promises to be much faster.
On the other hand I don't have any AGU poster mockups yet - maybe by Friday?