We have some grown children and wanted to be able to take them along on some trips so we got a bench seat installed. We found a company selling seats on E-bay and arranged to get them installed with rails that allow it to be removed. In hind sight, a two piece seat,a single and a double side by side would have been better as this seat is very heavy and hard to move.
You can see my lighthouse pictures from that trip here.
We had great weather until we got to my dad’s house in Northern Illinois. The house was ready to sell and the walk through was that coming Monday so we stopped by to pick up a few last things and a huge storm flooded the area. Some quick work diverting water and watching drains and it all worked out though.