I've dealt with several cases of strike this year, some very early (West Wales area) must be a month ago, all were struck on or under the tail.
Of my own all were long tailed Beulahs, for other people: one very short docked Ryeland ewe and a long tailed Ryeland lamb, one long docked Lleyn ewe, one normal length docked and dagged Pedigree Beltex. The funny tail lengths seem seriously over represented compared to the standard docked numbers among them which were not struck.