Hi Dan

If the scuts are to be migrated, they should be moved before the end of
a flow, particularly a mono-flow such as, say, sunflowers.
Simultaneously, the move should be timed such that a flow is already
underway at the new location. Of course, this can be tricky, and
sometimes you need to rely on weeds, and other bits and pieces.

For scut hives on permanent locations, by far the best management is
to always leave at least one shallow super of honey with the bees.
Beekeepers are only human and want to rob all the honey possible at
the end of a flow or season! I've also found that scuts perform better
without the use of a queen excluder. During periods of hectic brood
raising, this allows the queen to use the honey supers for laying. This
technique has benefits for calming both absconding and swarming
instincts.

Best regards

Barry in Kyalami, South Africa