Last year I built a sliding seat & rigger unit for my rowing canoe. This year I've come across a modification question. Does anyone have any experience in adapting the sliding seat assembly to allow movement of the footplate for rowers of different sizes? Others have loved the setup and wanted to try it out, but I tuned it so the footplate is right for me, so people with different leg lengths and stroke lengths find that the handles are not ideally positioned at the finish. Most rowing shells have tracks that allow the footplate to slide fore-and-aft. Any thoughts? Thanks.