With spring practice starting a week from today, USC still does not have a running backs coach. So I will recommend one:
Perhaps Clay Helton should try and hire Tim Skipper, who was the running backs coach at Florida in 2015 and 2016. Skipper was recently hired at UNLV as defensive coordinator. But Helton should view that as a plus since he seems to like coaches he can do multiple positions (see Johnny Nansen).
Skipper was also running backs coach at Fresno State from 2006-08 and has a good reputation in coaching circles. Does USC have any better ideas?