Interesting that you bring up the name Darrin Roberts. I recall his receiving lavish praise running the Wishbone for the scout team prior to the Orange Bowl game vs Oklahoma.
Several defensive players said that Roberts was outstanding in imitating OU's Hollieway. Shane Conlan was especially effusive in crediting Roberts with the success of the defense that held OU's QB to all of 1 yard rushing in the game.
As my screen name implies, I still have an affinity for the option offense, and I believed then (Roberts was signed in 1985) that Penn State could have had a great Wishbone attack with Roberts at QB and a RB cadre of DJ Dozier, Blair Thomas, Steve Smith, Tim Manoa, Sean Redman, Odell Wilson, and Chris Thorpe.
Of course, Joe showed how wrong I was by going undefeated and winning the championship with John Shaffer.