After testing the first kids model with Lien last summer, we decided on some improvements in the kids board. The updated model was brought to France to allow Lien to try it again and the other kids could have a go as well.
We made a back support (in a bigger seat), extended the grip on the handlebar and built softer rubbers into the system to allow for an appropriate kids flex. One of the sit skier ladies who tried the big twinrider felt incorporating the back support would definetly help adults with less core strength as well.
Thank you Anvasport, and especially Lien!