Sailing World published an article by James Lyne that advocates a technique called "impulse pumping" that appears to violate Rule 42.3(c). What do the rest of you think?
The article link: https://www.sailingworld.com/efficient-pumping
The text describing Impulse Pumping is:
Now you’re surfing down the wave, but sooner or later, you start decelerating. It’s like the wave is accelerating compared to your speed, but in reality, you’re just slowing down. This is the time to give a short, snappy pump — one that gives just enough impulse to flick the mainsail and asymmetric spinnaker leech, imparting enough energy to reaccelerate and continue riding down the wave. Returning to my bird analogy, once it’s flying, it just needs small, tip-of-the-wing movements to keep it going. When we’re using the impulse pump, we already have a lot of kinetic energy going because we’re planing; all we’re trying to do is match that speed.
Unless you're in a class that has relaxed rules around pumping, such as a Finn or Melges 20, this would seem to violate Rule 42.3(c)...
Except on a beat to windward, when surfing (rapidly accelerating down the front of a wave) or planing is possible, the boat’s crew may pull in any sail in order to initiate surfing or planing, but each sail may be pulled in only once for each wave or gust of wind.
... because the boat is already surfing or planing, and the Impulse Pump is a small flick to keep the boat surfing a bit longer.
Not to belabor the point, but the Impulse Pump also seems to be prohibited action PUMP 12 (Pumping the sail when already surfing or planing) in the Laser Umpire Rule 42 Guidelines: http://www.sailing.org/tools/documents/Rule42Laser201320032014-%5B16804%5D.pdf
Please let me know if you agree with this assessment. Given the influence of Sailing World, at least in the US, it doesn't seem like we're doing ourselves any favors as a sport by advocating techniques that are against the rules in most events.