bottleneck-slow down or impede by creating an obstruction; His laziness has bottlenecked our efforts to reform the system. blockade, obstruct, stymie, stymy, embarrass, hinder, block-hinder or prevent the progress or accomplishment of; His brother blocked him at every turn.
Becoming a Lifeguard. Becoming a lifeguard does require an initial investment of time and money. Certification courses cost anywhere from $150 to $500, and take upwards of 30 hours to complete.
Theme park job requirements. Some jobs, like clean-up crew, game attendants and ride technicians, typically don't need any experience and are trained on the job. Lifeguards at a water park, however, must be certified in CPR, complete a safety program and usually be at least 15 to 18 years of age. All theme park employees should be pleasant, enjoy working with people, and be able to tolerate loud noise and difficult customers.