"how can you estimate what the VWAP is going to be for the end of the day" get a crystal ball. i mean cmon! seriously
mutual fund managers would be more willing to give advice, but still, you cant expect them to say much at all.
I manage a hedge fund; of course, I only started last November, so I can't comment on how stuff has changed ^_^ the commodities we trade are extremely illiquid, so we can take a week or two to fully establish our positions. Generally that's the time-frame for those based on fundamentals. For those based on technical systems, generally the entry frame is smaller - 2-3days For volume, it's whatever we can take (again, very illiquid commodities, so my methodologies probably wouldn't work well with other asset bases (actually, it most certainly wouldn't work in futures and options trading, heh))