How about a picture of water crashing onto the rocks in the evening time but not the sun in the shot? Doesn't it come out too dark if you don't do it long enough? Also won't it have a green tint to it that you have to photoshop back to look normal?
At night, you really don't need the welding glass.
What the welding glass enables you to do is leave the shutter open for long periods of time in the daytime as you do with nighttime shots without it. It's like a night time simulator for the camera but you get different effects with it during the day.