I did really well in this class (in my major) and most of the advisors I've talked to have said that this would be a good prof to ask a rec from. However, the problem is that I know this prof at all ... I never participated in class, I never asked questions, I never went to office hours ... (because I was busy going to office hours for other classes)
Should I ask him for a rec? I don't know him very well. Should I just an e-mail if I do ask for a rec?