Isn't nitrous more of a pain in the butt than it's worth? I mean don't you have to check your plugs after every few passes, and it's way harder on the motor than typical boost, etc?
I run a very small 35 shot on my car on occasions that require a little more power. That being said, modern controllers make nitrous much safer. It really depends on the shot and system. Guys that neglect wot switches and window switches are the ones that mostly have problems. Plus it's very easy to pill up a motor and run a bigger shot on demand. It takes a little self control, but it's a great and cheap power adder.