So the first time I tried doing the HA whip thang was in the lounge where I just subbed the whip for the bag and ran the pump. Then I actually got one and the manual says to detach the pump and just draw on the whip. Doing it that way feels like any whip to me. Haven't decided which whip method I like better, I agree a nice high intensity bag is niiice, just haven't gotten around to making one yet Thanks for the stealth tip. I'll probably stick with my Oxy mini for now tho if I'm in the field.