I battle with the kick bleed all the time.  The kick and snare sound good when soloed.  When you bring your overheads up, the kick sound like shit.  I  have the HPF on the OH mics, and a gate on the snare now.  I'm gonna try the blanket deal.  I tried my AT4050 as a FOK last time, and was blown the fuck away when I soloed it!  It was fucked though, when I brought up the kick mic in the drum, and the FOK, it was like a fuckin phase cancellation deal, and the kick disappeared!  I wound up ditching the FOK for that project.  The blanket though, Youza!