My dad has been looking into picking up a ski boat so we don't need to ski behind our massive I/O anymore. He's found a 01 Malibu Response Lx close by, it has 360 hours on it and is overall in excellent shape. At $14,500 I think it is a great deal, no? Anyway what I am wondering is what kind of depth at the dock do these boats require as it is rather shallow for quite aways out into the lake in our area. It has a single axle trailer, at around 2500lbs is a single axle ok for trips? You'd think it should have a tandem axle, but I dont know.  Are there any tips you could provide to a first time buyer? Questions to ask or things to look out for.