I have taken the BSA lifeguard course at both Treasure Island in the Cradle of Liberty Council and Camp Roosevelt in Southern Jersey Council.
At Roosevelt, the director added scenarios on the last day. Candidates were put in the boat house and called out to an emergency situation, where the canidates had to assess the situation, go through the reach, throw, row, go, and react. If the canidate did not react correctly, the director gave the thumbs down, signalling the victims to attack the rescuer. Sounds sadistic, but it was alot of fun. Each canidate had to react to three situations, with varying resources available. While it did not affect the final passing or not, it was a great tool allowing the canidates a chance to evaluate their own decision making process.
Feel free to use it.