It doesn't matter what kind of sailboat anyone has or the location. You are responsible for any damage the wake of your boat causes. Delta said that his companion "took a header into the companionway."
10. What are the regulations concerning wake effects, wake damage, and responsibility? Regarding one's wake, vessels over 1600 Gross Tons (GT) are specifically required by Title 33 CFR 164.11 to set the vessel's speed with consideration for...the damage that might be caused by the vessel's wake. Further, there may be State or local laws which specifically address "wake" for the waters in question.
While vessels under 1600 GT are not specifically required to manage their speed in regards to wake, they are still required to operate in a prudent matter which does not endanger life, limb, or property (46 USC 2302). Nor do the Navigation Rules exonerate any vessel from the consequences of neglect (Rule 2), which, among other things, could be unsafe speeds (Rule 6), improper lookout (Rule 5), or completely ignoring your responsibilities as prescribed by the Navigation Rules.