Kayak fishing hand paddles by Backwater Paddles?

[El Yako]

Not tried these specifically, but I had a go with hand paddles but couldn't get on with them on the river - not enough power (or skill I guess) to paddle upriver. Also, though easy to wrench off, putting them back on each time I wanted to move was a pain in the behind. Paddles just seem easier to grab and go...