I'm not trying to be a smart-aleck, but do you think Cowser's output could equal what Hays has done up to this point? He might not hit for as high of an average, but I'd bet for a better OBP with maybe slightly less SLG%. If you could turn Hays into a pitcher who will be around for a couple of years, it may be worth it...and I don't think the output from LF would suffer that much...if at all.