These photos came when the vessel was for sale on eBay in UK a few years ago.
On gives a hint about paddle style.

Other hints will be found at:
www.paddleducks.co.uk/smf/index.php?topic=4811.msg26115#msg26115

and some clues in anything brought up on a search on 'pedalo' in the search box.

Roderick B Smith
Rail News Victoria Editor