Jon you said
When a powerboat operator has neither the inclination toward courtesy nor the skill to demonstrate it, you can minimize the effect of a rogue wake by turning away from the wake and throwing a hip check with your own boat's quarter by beginning to cut sharply across the wake, then deliberately putting the boat broadside at just the right moment. In most boats of at least moderate displacement, this results in little more than the overtaken boat bobbing up and down, with a minimum degree of rolling.
This is interesting.
So the way I read this is that if someone passes me from astern at high speed throwing a big wake on my port I should steer starboard until the wake hits my quarter then steer port.
Is that right?
If so what if someone passes me at high speed on my port side but from ahead throwing a big wake?
In this case it is the opposite yes?
No, if you are being passed to port from astern, you would turn to port to cut back across the wake... (this is assuming a wake thrown by a boat on a plane, it can be a bit different in dealing with a wake from a boat running at displacement speed, or even worse, a boat on a half-plane)
With the sort of flatter wake that Neptunus throws at 25 knots, you basically only have one 'wave' to deal with, a smaller secondary wave inside it, and you're done... The maneuver isn't easy for me to describe in words, but the suggestion of throwing a 'hip-check' is the best I can come up with...
You want to cut towards the first 'wave', but not too sharply... (The technique is actually quite similar to steering to weather in large seas offshore} As you begin to feel the effect of the wave, you want to turn a bit more sharply into it (in this case, to port) as you "climb' the wave...
Right as you 'crest' the wave, however, you want to make a sharp correction back to starboard as the wake passes beneath... If you're timed it right, your stern quarter will settle right into the secondary part of the wake, and counter the start of the boat's tendency to roll to port after 'falling' off the back side of the first wave...
This takes some practice, and of course the maneuver can vary considerably, depending upon the boat... But I can almost guarantee you, that in my heavy, but little 30-footer, I could have easily handled the wake of that Neptunus without my masthead rolling through an arc of more than 15 degrees...
All bets are off, however, were I to attempt to do so from my foredeck, using an autopilot remote :-)