Partially-reinserting the darkslide makes me cringe. In my experience, that INCREASES the chances of a light leak, rather than decreasing it. Also, it's too easy to stick it in too far and cut off some of the image. And third, the dark-cloth should be draped over the camera back and darkslide; hard to do that with the darkslide sticking out. Fourth, you spun the wind-catching properties of an extended darkslide as a feature, but i prefer to use something not attached to the camera to monitor the breeze. My bellows are enough of a sail. Fifth, I often use the darkslide either as a shutter or as a sun-shade.
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