Fletcher's double in the 2-0 reserve win at Preston on Wednesday took his total for the season to five in four games in the totesport.com league.
The 20-year-old has watched on in admiration at Rodriguez's emergence as a key figure in Brian Laws' senior squad and wants to replicate his close friend's success.
He said: "My aim is to be permanently with the first team and Jay is a good example.
"He's starting every game now and hopefully I can follow in his footsteps and get playing up there with him.
"I've just got to keep going, get stronger and keep working on the areas of my game I need to improve on."