And I figured out a solution - there are probably better methods. FIrst I deleted the North arrow on my structure plan. Then I created a new plan, and created the plot layout there. Then I copied the plot plan over to the structure plan, added a North line that corresponded to the plot plan, then rotated the plot plan and moved / nudged it into position. Finally I did a microadjustment of the North arrow angle until the seconds on the plot plan exactly matched the survey.