The best points the prosecutor can make.
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In the article, Davison defended the so-called "two-trip theory" the hypothesis that, after Watson was taken to his boat by water-taxi at about 2am that night, he returned to the celebrations at Furneaux Lodge and was later taken by water-taxi driver Guy Wallace to his boat, along with Hope and Smart, about 4am.
Critics of the Crown case point out there were no witnesses to Watson having returned to shore after water-taxi driver Donald Anderson recalled having taken him to his boat at about 2am.
But Davison said how Watson got there was not crucial because there was evidence he had been ashore at about 3-3.30am.
He also suggested Wallace's descriptions of the boat he had dropped Smart and Hope at had developed over time. Wallace said it was a double-masted ketch a boat the Crown has insisted did not exist, and which he had confused in the dark with Watson's single-masted sloop.
In his first statements, he wrote the word ketch with a question mark. Davison said it was significant that Watson himself never described seeing a ketch despite his boat being moored almost exactly where Wallace said he dropped the trio.
Montages made of photographs taken that day show no ketch in the area identified by Wallace, but do show Watson's sloop
http://www.stuff.co.nz/national/196691
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He is effectively pointing out an unlikely coincidence, that Guy Wallace mistook where he dropped Ben and Olivia, and that coincided with where Watson's boat was moored, and that he turned out to be a plausible suspect.
It can be acknowledged as an unfortunate coincidence I believe, because it is extremely unlikely that a random part of the inlet harboured a boat with no alibi.
Any thoughts?