Only Hunter
Unfortunately, to the best of my knowledge, Hunter has the market cornered on stern rail seats for 23.5, 240, 26 and 260 boats. There are not any after market manufacturers of the entire assembly (that I could find). The chandlery only has the seat portion for boats that already have stern rails. I might be wrong but, I'd be willing to bet Hunter outsources that fabrication but the general public of Hunter owners does not know who and even if they did, the fabrication shop probably has a non-compete clause in the contract wiht Hunter (which is a wise move on Hunter's part). Keep in mind that my comments are with all do respect to Hunter but, boy someone could make a killing if they could manufactur after market stern rail seats for the water ballast boats. IMHO