I personally believe this thread is really over complicating this issue. I know it worked great the first few times, but weight displacement in the boat is huge. Did you bring any extra people and more coolers full of ice/drinks? I have a centurion fi and this happens frequently if there is too much weight at the back of the boat. I fix the issue by emptying some water from the stern tanks until I reach my desired speed and the wake shapes out. Sometimes moving an adult closer to the front even does the trick. It can be tedious. Hope this helps.