I've had pretty good success "buying points" which obviously changes the odds and is essentially another form of teaser/parlay. 3-leg parlays using alternate spreads and alternate points have been my bread and butter past 2 years and have kept me in positive net units. I dont wager too much, just for fun so every so often i will drop $1-$5 on a 5-leg parlay. Biggest i hit last spring was $1 to win $742.