My best friend just bought a 1992 Ebbtide Dyna-Trak 181SS. The ladder off the aft was ripped off by the previous owner. It is my understanding that there are no replacement ladders available for these boats, so I am looking for opinions on a good after market ladder. I think it needs to be at least 4 steps, and have some sort of low profile handles on the top side of the boat. What have you other Dyna-Trak owners found to work?