... The break between the left and right parts of Aa4-72 confirms the interpretation of Aa4-71 as the 364th day of the year:

Aa4-70 Aa4-71 Aa4-72 Aa4-73 Aa4-74
363 364 365 366 367

Hanga Te Pau ought then to be at Aa4-73, and the little bulb at bottom right could mean pau, while the general bent form possibly alludes to haga rave. We can compare with G:

Gb5-12 haga rave inverted haga rave Aa4-73

We should notice the possible connection between Aa4-73 and the likewise with 6 'feathers' adorned Aa8-31:

290
Aa4-72 Aa4-73 Aa8-30 Aa8-31
365 366 657 658

In Aa8-31 the hua sign is up, in Aa4-73 down. In Aa8-31 it is drawn as the sail (Raá) of a moon crescent canoe, in Aa4-73 it is drawn - it can be imagined - as if it was the anchor stone at Hanga Te Pau (the 'rest in peace' bay for the 365-day long sun year) ...