Thruster for kayak, which one to choose?

Hello everyone, I found on aliexpress two thruster models 200mm 36-48v that maybe could fit on a kayak. I would like to try one on my 17' kayak. Which do you think would be better? the design of the blade is different.
https://it.aliexpress.com/item/4000052570614.html?spm=a2g0o.productlist.0.0.7f5a7578WvcKrp&algo_pvid=7f81a766-56e4-4de7-8892-f0750751bc36&algo_expid=7f81a766-56e4-4de7-8892-f0750751bc36-5&btsid=ae405ab2-2064-428e-a177-849ff35e4f86&ws_ab_test=searchweb0_0,searchweb201602_5,searchweb201603_55
https://it.aliexpress.com/item/4000200416851.html?spm=a2g0o.productlist.0.0.7f5a7578WvcKrp&algo_pvid=7f81a766-56e4-4de7-8892-f0750751bc36&algo_expid=7f81a766-56e4-4de7-8892-f0750751bc36-7&btsid=ae405ab2-2064-428e-a177-849ff35e4f86&ws_ab_test=searchweb0_0,searchweb201602_5,searchweb201603_55
I can't translate Chinese written in images.
Videos:
two motors on 44v https://pingjia.alicdn.com/l4QhS6EccpZUPlsHOYI/4FsnzU2eX2ct0XaulDC.mp4__hd.mp4
maybe one motor at low speed https://pingjia.alicdn.com/ivEVw0JlvA1UTSPMnld/TJMLLLu4Wgu2Xm7QHri.mp4__ld.mp4
This is a new system for kayak https://www.thrustme.no/ and it push 16 kg in forward on 18,5v but for me it is very expensive, this is the prop https://www.thrustme.no/product/propeller-cw/

Those all seem to be either 3D printed jokes, or computer renderings.
They all seem to have a absolute terrible prop designes for speed and efficiency.
You didnt say what you want from this thruster, speed, range, cost limits , etc.

Thank you for your answer Hillhater. I want range, I think that a large propeller (brushless thruster) at low revs 1000/1500 consumes less battery compared to a dc trolling motor. What do you think about it?

Yes, certainly prop design is critical, and part of that dictates the rpm .
There have been several threads on this forum , generally i recall a large dia , thin section, slow turning , prop ( much like an aircraft prop ), is ideal at low rpm.
But they are very susseptable to fouling by weeds and debris etc, so often a compromise “swept back” prop design is used.
For low motor rpm and to avoid gearing , a very low KV motor , low voltage, and an efficient electronic speed controller is necessary.
I doubt you will find such a set up available commercially though.?
Read this thread to give you a few ideas.. https://endless-sphere.com/forums/viewtopic.php?f=39&t=40921