questionable info on my Rainbow Boa

[Yness]

kay. So I was talking to a guy here in winnipeg who has had a rather extensive history regarding snakes and reptiles in general. He told me that basking lights weren't really necessary for rainbows. He even went so far as to say that a uv light wasn't really necessary as they are primarily nocturnal. He said all that i really needed was an under tank heater to keep part of the tank warm. What are your thoughts on this, cuz i really need to make an informed decision by friday of next week as that is when i am setting up the tank for her(i am getting her on sunday after).