lotus stopped using these because over time it warped the hatch.Glad I'm not the only one that has dented their IC with that stupid placement of a hood latch. It would be 1000X better if they had simply attached a small locking arm to either side of the hinges -- it's like the chassis design team and the body design team came from different pubs!
The hot air from the radiator is an issue. Just stick your hand on the roof on the highway, you'll notice the air there is quite a bit hotter than if you raised your hand into another airstream. Crude thermometer I know but the difference can be felt. I've heard of a splitter added on bottom of front of roofs similar to cup roof along the windshield top edge that supposedly splits the hot air and runs it in a different direction allowing fresh air in the scoop.
Really Really interesting post by the way. :clap:
I am in the camp that thinks that fans is the only way to go. Either roof, the bottle neck is still at the fettle location. Even with fettling, the opening is just... ridiculous. If fans are used, just a theory but I think the non cup roof would be a better combo here.