My university team used to get an X7 every year from Mastercraft for our water ski and wakeboard team. We used to load it up with the factory 700lbs and two 750lbs bags on either side of the engine plus one in the bow, then people, and we didn't get nearly enough wake to justify the ridiculously increased gas consumption. It was also ridiculously crowded when you weighted it. We later convinced our skiers and Mastercraft to let us switch to a v-drive and came to the agreement that the X-15 would be the best crossover.
Only pic I could find of the weighted X7 wake, not much to write home about.