I don't have the exact numbers, but teasing across the 3,4, and 7 have shown to be profitable over the long haul. Maybe someone who knows more than me has the exact #s.
Anyways, here are week 1 lines as of right now that are Wongable
Ravens +1.5 teased to +7.5
Eagles -7.5 teased to -1.5
49ers +2.5 teased to +8.5
Vikings +2.5 teased to +8.5
Usually you would tease all 2 team and 3 team combos, then a 4 team teaser
Anyways, here are week 1 lines as of right now that are Wongable
Ravens +1.5 teased to +7.5
Eagles -7.5 teased to -1.5
49ers +2.5 teased to +8.5
Vikings +2.5 teased to +8.5
Usually you would tease all 2 team and 3 team combos, then a 4 team teaser