Applying a top dress of compost and amendments to the soil surface just before the flip, specifically to encourage feeder roots to migrate up into the mulch layer so that future top dresses are received quickly.
Jeremy left 7.5 gallons of soil in a 10-gallon container deliberately so he could preload a top dress in the headroom. Two-plus weeks later feeder roots are fishbone-laddered through the mulch layer.
Discussed in: Ep 024