It does a little yes but that isn't where the stretch is. Between the two heads it stretches all the way down to the opposite side of the room so a little puckering behind the knee head is irrelevant.
I'm a bit like yourself bought all these super duper tools that look good but end up somewhere in the back of the van, would you recommend the kneeless
I'm In Ireland so that's a no go, it looks good on YouTube but I was wanting a second opinion as it's a lot of dosh at this time of year to hand out.
Yeah I know what you mean, have you seen the YouTube video entitled "carpet fitting with a kneeless " this one gives a better idea on how to use it. Maybe send him some questions? Get some more feedback
I like the idea but I dislike the non adjustable pins at the back. Surely you risk dust marks from the pins piercing the backing and the top of the underlay. Would it rip the underlay?
Your stretching the carpet not the underlay. Piercing through with pins will not allow dust through as the underlay just reforms when removed. Trick is to get the front pins only through the carpet to get the best stretch. Takes a little practise. Im still no expert but I do love it