No but I've often thought about it. I've not found a direct replacement but had seen a thread that talked about replacing the helm seat with the Pompanette Evolution series and made a note of the seat model as it looked nice and comfortable, not much wider than the originals but with flip up armrests, which should make maneuvering easier, and a flip up bolster (though of course pretty pricey) but I can't find the thread, could well have been on a different model boat but it's one that I'm keeping an eye on.