I've been at this for years and keep tons of records and one thing I can tell you is teasers can work late in the season for any sport.  Normally they are sucker plays and this is true, however once you reach the final few weeks of a season, in particularly college basketball, then teasers are worth a series look.  Home teams at -6 to -8 are nice choices as you bring them down to -1, -2.  Home teams typically win so this is huge value. 

I do not recommend teasers once the NCAA conference championships and tournament start.  Unfamiliar opponents will bring an unfamiliar result.  One thing I learned regarding college basketball post season is to expect the unexpected.