There is always Ocean City, MD a short 7 hour drive to the east. I am heading up there this weekend for the first time for the national AKA Kite Convention.
Something that I have noticed is that they seem to have more consistent, stronger wind than Cape Hatteras, at least this time of year. Checkout the wind records at ikitesurf.com. Also there is a local shop with kiteboarding gear/experience, the Kiteloft at kiteloft.com.
RealKiteboarding is just to the south on the outerbanks of Cape Hatteras, http://www.realkiteboarding.com
. The Real Kiteboarding folks are also into snow kiteboarding. Lots of fields in PA and some snow too. So your friend may be able to blow around despite being inland and in ... Pittsburg???!