Page 31 of the BGH book shows a skeleton drawdown of Wishing Well for a bookmark that is significantly different from the Wishing Well draft on page 97 (the book suggests it may be due to a treadling variation). Using the skeleton drawdown, I determined the threading/treadling that would provide this effect.
The threading was not drafted as overshot, preferring instead to have groups of 2 or 3 consecutive ends threaded on the same shaft for textural interest. The majority of the towel is woven as plain weave, with one or more bands of the pattern woven as for overshot (pattern picks alternate with plain weave picks). The threading had 431 threads, plus 2 for the floating selveges.