Thought I would chime in, finally got my '15 throwing a nice wave. We surf goofy side - last time only had 4 people out and the wave was still nice. I also had to recalibrate the digital speedometer with the paddlewheel offset adjustment as it was about 2 mph off. I've got 1100's in the rear lockers and added the stock 650 bag to the starboard side under the seat right in front of the 1100. This seems to have made all the difference. I run the surf side bags full, non surf rear bag at around 50%, auto surf plate at 50%, 0% IBS. The more ballast I let out of the front the better the wave was. The boat is defintely listing to the surf side and the wake surf plate actually isn't doing all that much, but im happy because I've finally got a surfable wave with plenty of push. I plan to piggy back the stock bag to the 1100, right now I'm filling it manually with a pump which is a bit of a pain. Anybody have any advice on how to piggyback bags? I was just going to run a line out of the overflow of the 1100 to fill it but not sure how it will be able to drain. Thanks.