G.G.-
A thought or two on your design. I have the medium bazooka, which I love. I really like the design and look of yours! My first thought when I received the B. Gold Trap was I wish it had plexi glass to see inside the trap.
After some use with the trap, I would think you would need a screen or grizzly over your turbo intakes for two reasons- Leaves and sand. Using the trap last weekend I noticed a whole lot of leaves getting stuck in the grizzlies, but not the trap. I also had a lot of sand built up in the bottom intake due to my partner sluicing just above me. I believe this is why the Bazooka has the intake pipes sticking out a ways from the bottom (or top in your design). If you start having issues with plugged holes, you might want to try a screen or something.
My other thought is with a flat trap you would need less water flow and so much of an angle since the rocks do not have to kick up and over. This would be good as it takes a good amount of water to make the bazooka run effectively. On the flip side, too much current and your gold might blow straight through your trap!
Would love to see this machine running next to the bazooka...
Rob