I have a 2007 outback with tower, and have loved it. Recently we feel our wake has gotten larger and trying to figure why. A couple observations; 1- the steering has gotten loose, and will be replacing the connection in the stern soon. 2-I discovered that there are some relatively minor gouges to the bottom about 1/3 from the bow on the ridge line (teenage nephew using boat??). The boat seems to be "skipping about" and is difficult to keep straight, actually feels like it is planing too high in the water(like an over trimmed outboard) . I have checked the 3 blade prop, and looks ok, as does the drive shaft.
We ski with 15 off, just open water, 33-35mph, try to have 1/2 tank gas with driver and 1 spotter. There is a fixed plate on the stern. Having a tough time figuring what is up and hoping someone has some advise, as the wake is definitely higher, and steeper.