It’s highly variable by department, but for the most part, UG research is uncommon. It’s because there isn’t much graduate research to tag onto. There are no doctoral programs at Cal Poly. That said, research is where many students get their hands on work. At Cal Poly, you get that through labs and clubs (look up PROVE lab, CubeSat, PolySat, SAE, etc.). It’s probably overrated unless you want to get into a PhD program.