I didn't have success... but if you are getting an aviator it comes with a good training video. I had a couple of mishaps where I pushed a little too quickly and freaked my bird out.... so it will be a while before I try again.
The younger you start, the more hope for success you have... I figure, though, my IRNs and I have the next 20 - 30 years together... so, who knows, maybe one day we'll figure out the harness
Ellie.