How to make a longer wake? MOJO 2015

[Mizz Tiff]

I've checked through most these threads and couldn't find any to help with my problem- how can I make a longer surf wake WITHOUT upgrading to even heavier ballasts? We have a brand new (7 days old) 2015 mojo with surf package (2500# ballasts and manual surf tabs). It puts off a pretty good wake but it's so short I can only find the sweet spot about 2 feet from the platform. I believe we're running ballasts 100%, non surf side tab all the way down and the wake plate completely up.

Not looking to upgrade our ballasts. Just want to have fun with what we got. Thanks!