Sorry I didn't make myself clear. I understand that if there's a steady decline in BTC (perhaps due to Silk Road disposals) then going short on BTC would be ben

Sorry I didn't make myself clear. I understand that if there's a steady decline in BTC (perhaps due to Silk Road disposals) then going short on BTC would be beneficial but how does the other leg, going long on QQQ, protect you from the expected decline in BTC not happening during the course of the day ? Sorry if I've totally misunderstood what's going on ;-)