Short Yardage

Now I’m not an offensive coordinator by any stretch, but I had a question about our short yardage woes. I seem to remember a short yardage package employed by some big 12 teams where they brought in a big backup QB along with several FBs and TEs, snapped it to the QB, he would run over everyone and get the yard or two to convert 3rd and short or goal line score. I think that Cole Kelly is plenty big enough to pull this off. Am I off base in thinking this would work? Or has this already been discussed?