I love Gu. I even wrote it a love song.
Yeah, I'm pathetic...

Anyway, IGNORE the directions.

When you need a kick in the pants, have some Gu.

I save it for the last hour or two when I am losing steam.

Gu20 is pleasant, I usually carry a single serving packet of Cytomax for emergencies. But what I typically do is get a Powerade at a store we are passing.
Nothing special, but at least it's cold.