I used the seats on a variety of surfaces, from road to easy singletrack. The rear seats were fitted to a gravel bike, the front to a hardtail mountain bike. The WeeRide mounts to a metal bar fitted ...
The moral of the story is that it is be patient, save a bit more money, and buy the more expensive mountain bike. You will have a better experience on a better bike. The post 3 things I wish I knew ...