Senko training and a question

I finally did it, I fished a senko last night. My 1st 2 fish hit it as soon as it hit the water. The others would hit it when I gently raised my rod tip....I was fishing both 4" and 5.5(I think, the seemed a lot bigger than the 4") models. Anyone else fish these at night? I was fishing about 2' of water and cant wait to try them out in the big lakes. I found a 50 bag of them (I call them Fenkos b/c they arent the real thing, but close) on ebay for like 8 bucks. But the real question here is, does anyone else throw them at night............??
Jason