Yep, simple is almost always better. In the short amount of time I’ve been working the wood, I have never bought a jig of any kind but I’ve made plenty. I kind of take some pride in that. I once made a simple triangle to square up large pieces of plywood. It’s big enough for nearly a half sheet and it works like a charm. Definitely a must have for making cabinets.
Here it is. Found a picture.
The jig rides the fence but keep the right side of the plywood away from the jig. Simple and effective
Losing fingers since 1969