I'd only get the full payout if all six hit. It's a bit complicated, but by having four out of six-folds its like hedging your parlay so I'm guaranteed some kind of return as long as four hit (but the amount to be won if all six did hit would be less than if you just did a straight six out of six parlay). If you didn't get six out of six then the amount returned depends on what the odds were on each of the four that hit, or five that hit. So say you had 6 lines and two were 6/1 and 4/1 odds, and the other four were all 1/6 odds and only the four at 1/6 were successful then you'd get a very small amount in return (less than your total stake). But if the two 6/1 and 4/1 odds hit and two of the 1/6 odds failed then u'd probably get more than your total stake back. So it's only worth doing this kind of parlay if your including a couple lines at positive odds, like with this one I've got Bader by decision at +162.5, and Wiman by decision at +220 which really help boost the odds and I still have a good chance of hitting.