I need one Apta too.
Two month ago, I wanted to rebuild my 12 years old Bigshot. I was on the cheap at the time, so I made the head, added the commercial slings and put that on my flimsy pole pruner. It was part of my learning time, worked well enough ( shot at 60' for srt access in 100' ashs and poplars), but I never used it since.
The rubber was damaged by the time, so I put a new set on the head and made a 2:1MA and a release system. But with the same setting, it reached only about 45'( different rubber?). So I modified the MA to a 3:1 (easier to operate) and extended a tad the telescopic pole. I was in my home, the pole laying on the floor while I pulled the MA's rope. I suddenly realized how much the pole bowed under the tension. Wow.
Time to chicken a bit!
I had always my helmet for shooting, but I can't see it to protect me if the pole has an "explosive" folding.
I don't want to use it with the pole saw, much stronger but less practical ( have to unscrew the head), so it probably won't have much use in the next years.