(defun x-hugh-boxquote-yank-and-indent ()
  "My attempt to combine boxquote-yank and indent.

The car/cdr bits are from the docstring for boxquote-points.  It's a bit silly to run it twice, but it was simple."
  (interactive)
  (save-excursion

(boxquote-yank)
(next-line)
(indent-region (car (boxquote-points)) (cdr (boxquote-points)))))

(global-set-key (kbd "<f9> y")  'x-hugh-boxquote-yank-and-indent)