Also, wouldn't it be slightly easier if the were a couple of small adjustable wheels which could be attached near the top of the pole and leant against the wall to take the lateral strain off the pole when holding it.
I've only had it since about 2:30 today, but I've played with it lots!
There isn't much strain in holding it. It's not like you're staring at it for very long ... probably not more than a couple of minutes ... and it's not very heavy either.... less than 800g.
I've found it easier to just let the pole rest against the side of the gutter and then I can lift it, turn it and tilt it to get the best view.
By angling the mirror I've been able to look either straight down into the gutter or along the length of the gutter.
Of course, other people are going to take the idea and improve it and make it more suitable for their own particular purposes. For myself, I think simpler is better and that addition of wheels would over-complicate things.
I'm not writing a report for a third party or preparing evidence for a tribunal. I'm just inspecting a gutter. A simple guy doing a simple job and thinking that, for me, a simple solution is best!
I can easily understand that wheels would be VERY useful for a camera. A pair of wheels (like a bogey) would locate the camera fairly rigidly in two dimensions and allow for one degree of freedom parallel to the gutter to make a nice smooth video right along its length.