Every year, almost every draft, someone will look back in horror at what could have been, should have been, would have been...save for some awful mistake.
What's worse is that most of them are easily prevented beforehand through strict imposition of rules and accurate weighting, easily circumvented if a little forethought and a little planning had been used, or easily managed away if they arise.
Here's a non-exhaustive list of 25 tips to help avoid those tragic, draft-killing blunders that can ruin a campaign before it even gets off the ground. And by all means, consider yourself free to add more in the comments, especially if they're specific to particular scoring league rules. The more the merrier.