Not sure if the hull of the 2007 is the same as my 2011, but here's what we did. Without a gate, we used to fill surf side full and put majority of crew on that side.... leave other side empty to 25%. If you have another portable bag, put that on your bow seat as well as IBS.( the bow weight really made a difference for us, but be careful not to take a roller over the bow). Heres a pic from a few years back with that set up. I think we ran about 10.2 mph then with wake plate 80% down. Best thing is to experiment. Try only changing one thing at a time. Good luck.