I'm toying with the idea
I'm toying with the idea of adding an aft-facing seat behind my right seat. I'd be giving up half of my baggage space, of course. It's a non-trivial piece of work, so I may give up. It requires:
- Building another seat
- Adding seat belt hard points
- Incorporating the tip/slide canopy so that my 3rd occupant can easily get in and out
- Extending the baggage compartment on the right side past the aft bulkhead so that my daughter's legs can be stretched out
- Taking a WAG as to where my W&B is going to work out to make sure that seat is usable.
- Taking another WAG as to how big my daughter is going to be in two years when I'm done buidling this. Will she fit? Will she still fit two or three years after that?
So, in short, it probably won't happen!