Exactly right jmodified, I do the same (except I never sell VTSI). I look at VTSI several times a week. If I am in a buying mood and I happen to see a significant number at the ASK then I simply buy those shares by entering a limit order at a price slightly above the ASK.
If all I see is the 5000 at the ASK I typically will not buy. So I agree with your counterproductive comment.