One day we'll have a lovely large central database and won't have to have so many splintered efforts. Oh well, until that day comes...
The one thing that I'd probably say is the most important is turning the information into something usable. Having a huge amount of scouting info doesn't help zip if you it takes half an hour to find what you are looking for. Make it fast, and easy to find what you are looking for. And make sure to allow enough time to compile it, be it randomly scribbled notes into something readable, or simply printing it off the computer. Just make sure to allow enough time.
OK, so that's technically 2 points, but who cares?
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Anyways, that's my $0.02
-Chris