In Decker v. City of Imperial Beach (1989) 209 Cal.App.3d 349, a surfer became entangled in the tether of a submerged lobster trap and drowned after the city pursued an antiquated surf rescue method, the "lifeline rescue method." (Decker, supra, 209 Cal.App.3d at pp. 352-353, 360.) There was evidence that the rescue personnel arrived promptly and made diligent efforts to attempt to rescue the surfer both with the sheriff's dive team and with a helicopter, but the dive team used a rescue method disfavored for surf rescues. (Id. at pp. 360-361, 363.) The court reasoned that this evidence "could support a finding that use of the lifeline rescue method is a disfavored surf rescue method and would not be used by an experienced, trained surf rescuer but it does not support a finding the sheriff's dive team was grossly negligent for having used this method given their lack of training or experience in surf rescue." (Id. at p. 360, italics added.) The Decker court also noted that the plaintiff did not contest the validity of the sheriff's first rescue attempt with the helicopter, which also failed. (Id. at pp. 360-361.)