I'm guessing that this guy is just looking for advice for his trading of futures.
High freq for a day trader is somebody who flips their exposure, is both long and short, and uses cross hedge to act like a market maker. This is called "working an average price" or legging into and out of cross hedged positions. This can help you size into a huge position.
This is a really important skill.
can you explain in a little more detail? what do you mean cross hedge for future traders?
