Steve when I was doing a lot of work in, and on  houses I was always using "most" of a sheet of plywood. Seemed I never mastered the art of using the entire sheet. Anyhow I would accumulate a lot of 3 to 6" wide ends, or sometimes full lengths. These were perfect of fence material though. I'd just screw it on from behind the fence. All of them have a few places with holes in the fence for this, and just cut through. Tons of improvement in cut quality, and also narrowed the gap you usually get in the throat were that dust heads to, suddenly it's stopped, except that tiny slit in the fence. Allowed your suction from above to actually work. But the biggest benefit was stock support, especially on miters and bevels, or combos, and like the ZCI a lot less furring of the stocks cut end. 

On most saws going to the right with the head of the machine was doable going full left is sometimes limited though. it's a design flaw of the tools concept. Probably the biggest reason a lot of guys with big shops kept their RAS's. I'm wondering if this is what you are seeing with your dust port from Shop Nation?