Anyone use a hybrid Roto/Head to Head format?

[DivineBovine]

I'm in a fantasy baseball league that's straight roto. I think this sucks because there are like 3-4 teams at most that have any shot by the all-star break. And with a month left to go, its usually a 2 team race. But many people are against head to head because they feel its unfair.

 

So I was thinking why not have the top X teams make the playoffs based on roto, then do a head to head playoff. Anyone else do this? Is there a good way to make this work?