[rheotron]

A few simple questions.

I find this happens to me occasionally. I scout too early/forget to scout later and then I have only a limited idea as to what he's doing. For example, I scout and I see lings/roaches out the front of his base, so I begin to go colossus/gateway units. After a few engagements across the map, I see muta/ling at which point I'm at around 180 supply of colossus/gateway and there is not much I can do to change my composition.

What should I do at this point? When I see that I have totally the wrong composition, is it just GG from then? Or is there a way that I can salvage the game? Does it just come down to scouting better and more often?

Also, should I push straight away when I'm at 200 supply? A lot of times I feel like I just leave my units sitting there doing nothing when I'm at 200/200 because I don't have the confidence to push. If I shouldn't push as soon as I hit the 200 mark, what should I be doing to make the best use of my units?