Parlay or not?

[foolishdrunk]

I was just curious on what the average sports gambler thinks on parlay's. I have stayed away from them, because I believe that was the reason last time I bet I parlayed way too much. Now I am 43-12 in the last 6 days with my live bets included. Without I am 27-6. I have yet to make a parlay, and I was wondering what you guys thought about them. Do you like to do them? If you do use them, how often? How many teams are included? Do you mix under/over with moneyline and spread?? Etc, I'd like some detailed input.