Original boats were designed to be paddled from the stern seat. They usually had a live well mid ship. The boats were used to run fish nets, and for sport fishing. The seat slid back making room for the net to be emptied, or moved forward when casting. The rear paddler controlled the boat position.
The rear seat was attached and did not slide. I will use my pirogue seat until I can determine where to place the seat for my use.(Let me think
,Grandson likes to paddle, I like to fish.
) Actually it will be me paddling so he can concentrate on fishing.