So long as it's moving through key numbers at a good price, like parlays, more teams is always better
But since so many people are willing to bet into bad prices, that's all that so many books offer
I like to play a 2 team 6 point teaser teasing both sides of the same game.
Now it's not something i do often , i pick and choose my spots , but that's my favorite "gimmick" bet. I like it most on a monday night or weeknight game when i dont really have an oppinion but want some action. I've also found that it works best if the line is somewhere between 9-14 points.