The main benefit of using the V when using the snake method is that a roast like a pork butt has no direct heat hitting it. You can get similar results from putting a half pan in the center but it does not reach to the cooking grate. This angle pushes the direct heat away from center. If ya have it, try it. It's basically a deflector while using the snake method
I have done the same thing except I put either parchment paper or aluminum foil down under the small end of the vortex
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This is a GREAT plan...Covering the lower grate with foil to direct the air flow in the right direction is a great tip...When I'm using it wide side up and the fire is around the "V" I place an aluminum pin pan inside the "V"...A great fit and does a great job of directing the air to the fire...