Hawira said the drone deployed on Thursday by Quinn Pedley helped them decide where to place the trap, based on where the cat rested.
Neighbour Edward Kumar had been operating the cherry picker from Hire It Limited over the past three days. It had been hired to the rescuers for free to help retrieve Rio.
Kumar said the past few days had been all about planning.
"The cage was our last option, but maybe we should have gone with it first I suppose.
"It's all trial and error and we've never done this before."
He said hopefully there wasn't a next time, but if there was they knew what to do.
The day before, while attempting to get Rio out of the tree, a palm frond went through his shoe and into his foot.
"My foot's all good, I hacked at it and got out the little fibres."
Whanganui Fire and Emergency group manager Aaron Summerhays said their crews were unsuccessful due to the tree's height, and the tree's fronds, as opposed to branches.
"As an emergency organisation, our resources are frequently required elsewhere, so it is normal that our crews haven't remained at the scene," Summerhays said.
"Fire and Emergency has been liaising with the SPCA and have maintained regular contact with residents in the street throughout this process."