Sonny you ask about limits to pruning; I planted a in ground Dekopon citrus tree in my greenhouse, and therefore had to remove a in ground Clementine to make room for it, as there is just so much greenhouse space. I cut off every branch, and 100 percent of the foliage, it was a naked tree.. All that was left was the main trunk and three foundation branches. Before I could find time to dig out the root system and toss the entire tree, it began to refoliate. It was no time before the tree once again had a LOTS of foliage. I'm still going to remove the clementine to make room for the Dekopon, but it was interesting to see how strong a citrus tree really is. Anyway, if your going to try growing a Japanese demonstration tree, I would guess you would have to prune the tree back hard. Your correct, in that Gibberellic acid "pollinates' so many blooms, and thus sets such a huge crop of fruit the fruit size becomes somewhat smaller than normal. If your after a tree, as shown in the pictures above, I would not be concerned about alternate bearing. One last note: Gibberelic acid fruit setting for clementines is a VERY common practice by commercial growers all over the entire industry, and does not seem to cause much of a problem about alternate bearing. - Millet