DH platoon?

looking at papi's 2008 stats, he hit .221 against lefties w/ an obp of .308. against righties, he hit .279 w/ an obp of /389 and a slugging percentage of /532. so perhaps we should sit papi against lefties. jeff bailey has hammered lefties thus far this season, hitting .412 and slugging .765, albeit in only 17 at bats. is this the solution to our DH dilemma?