Lund Boat Seats?

After fishing the past weekend which included a fair amount of sitting time it seems my seats have lost the comfort in the bottom foam. I was wondering if anyone has had there foam replaced in these swivel seats? Also I am not against changing the seats all together, does anyone have a manufacture that they have been happy with? None of my seats have arm rest and I don’t think I want them. I would not even oppose putting a brand from another boat in, seats are in a pro-v. Any help would be much appreciated. Thanks