I think you are going to have to go 5.5 or less if you want a single axle trailer, and even then it's not going to a heap of fun pushing it around on grass! will have to be a pretty good rocket launcher to double as a wake board tower, not impossible, but I doubt anything "off the shelf" is going to work. Do the rounds of a few dealers and see what around, 55K will buy a decent boat in that size range.