I think your strategy is the best way to do things here. For whatever reason this thing doesn't appear to want to go below .0005, so you know you're safe buying and flipping if your average stays in the 5/6 range. The only fear is if this thing actually did fall back to .0004, but if you keep your holdings lean enough at any given time, there shouldn't be any difficulty in unloading for a small loss and if you can make enough profits to ride for free in the meantime, then you don't even have to worry about that.