I dont know the answer to this, but im guessing unless you're already running a 1200/160 than I would assume the answer would be more thrust or "move more water faster and longer" . I guess the answer could also be something like "try a different trim setup"...
Unless you are only looking for technique tips, it would probably help to share details about your ski setup.. and if you're looking for technique tips, you might want to post footage of what you are doing now so folks can chime in with suggestions based on what they see (body position, setup wake, timing, etc.)
This is coming from someone who can barely 180, so I have nothing to suggest in terms of technique with or without footage lol but someone who rides flat water should be able to tell you if you could be doing something differently.