Long Wheelbase

We really don't need yet another vehicle in our household. A 9th bicycle for a family of four is getting excessive. But this Adams Trail-A-Bike (I believe the Canadian firm invented them?) seemed like a good idea. ike is fast on his own micro mini, but he has zero road sense. Bristol is hilly and pedalling our trusty 45kg Dutch Bakfiets is getting more strenuous as the kids get heavier by the week. The combined weight of the new set-up is 21kg less, there is some extra HP on tap and it was only £20 on Gumtree so it's ticking lots of boxes. In theory.
In practice there is a frightening amount of tail-wagging-the-dog effect (even if ike isn't doing ballet plié), and it's 23cm longer over-all. Not good. I've now tightened right up the universal-joint coupling but there is still slack in the connecting pin. I reckon 20cm could be cut out of the main top-tube to bring the the trailer as close as possible to my back wheel. But even with those modifications, the bottom line is, I don't like not being able to see what he's up to, or if other traffic is paying him any attention. BP

OR as Dutch Brothers, Jan-Willem suggests, go for the family tandem designed by Ronald Onderwater. It's wheelbase is 19cm shorter than the Bakfiets.