They induce the trees to flower by manually defoliating the trees. This causes stress and a new flush of leaves and flowers and subsequently apples are produced. Short of regulating the weather I don't think so. Given different conditions next summer I will be very surprised if we have a significant amount of late bloom next year. With the harvest season approaching many jobs are being done to prepare for the culmination of the 1998 season.
Harvest is a hectic, yet an exciting time of year.
Because so much activity takes place in a short period of time it is essential that careful planning precedes harvest. Consider including equipment safety and training in your harvest preparations. Perhaps the first step is to take a look at the equipment you will be using for harvest. Make sure any original guards or shields are in place and functional. See if any additional guards or shields are needed.