BOON 2018 artists ranged from third year Wintec student Liam Bourton to internationally renowned artists like Hayley King, aka Flox, and Charles and Janine Williams.
A massive kārearea (New Zealand falcon) will grace Victoria on the River's Sky City wall by Charles and Janine.
The South Auckland couple said they will return in the Easter break for about four days to complete the piece. In order to reach the full span of the manu's wing Janine said they will need a lift with more lift.
Fellow artists and BOON organisers, Paul Be and Wintec tutor Tim Croucher, acknowledged the "monster effort" the artists contribute to the event.
"It's not a festival without them. They're right at the core of it and it is amazing what they do," Bradley said.
Craig McLure of Creative Waikato said The Victoria on the River artwork was the most challenging wall to date at 35m x 19m
"Even the artist was going above and beyond what they have done in the past; it will certainly happen, just need to regroup," McLure said.