This might be obvious, but it might not, I've seen people recording mixes from decks and starting again over and over when they get to the last track and don't like the way they've done the mix.

If you are using SF and you crash a mix then rewind the previous track to a break, cut back to it on the mixer and just do it again without stopping recording.

Once you've finished the set you can use the markers in SF to mark the identical points (say the end of a break or whatever), you can use the markers to regions function then delete the region(s) with duff stuff in them. You might need to choose some option to do delete's later, I can't remember how it works but you should be able to do all the deletes then choose 'Convert to New' afterwards rather than waiting for it to do the deletes one at a time (which takes ages).

And you are sorted ... perfectly edited mix in half the time, if you get good at it you can do the marks and edits in about 15 seconds per edit ... whether or not you need to get this good at editing depends on whether your deck skills are as below average as mine or not ....

Not that this answers the question at all, but i hate to think of people all over the country swearing at themselves as they repeat the first 15 mixes of their set to get the last one right ...