Ok just found the perfect seats for my old boat! You can pick them up at Walmart. I really was not wanting to permanently mount seats but I wanted back support that cushions just were not giving. These seats have two spring hooks that clamp the bench really well. Since they are removable I can flip them around for fishing or remove one and just have one in the center when I am fishing on my own (most of the time). Got both of them for $30 bucks and they are actually comfortable to sit on. Underneath the seat is laced with a bungee for plenty of give. So if you are not wanting to drop a ton of money or need to be able to reconfigure your seats you should give these a try. If the Walmart link goes away Amazon also has them except not as cheap.