NAVD88 to NGVD29 conversion

[JimCousins]

I just finished a rather convoluted, slow process to make a vertical Datum transformation.
Acquired DEM from USGS, converted Raster to points in the coordinate system I needed, added xy and converted the z from meters to feet, exported to text file, and then processed that through CorpsCon.
Is there a better way to do a vertical datum transformation?
Regards,
Jim

[BondHarper]

Have you tried using the built in transformer? Here is a list of vertical transformations: http://resources.arcgis.com/en/help/main/10.1/003r/pdf/geographic_transformations.pdf. I would think they would be available to use if ESRI provides them, but I've always just used Corpscon, so I have no real experience using them.