Well actually at my local spot they do pretty well installing these red flags. Last week a man died there. Currents are very strong, and entering the water without a surfboard can become pretty dangerous. The rescue teams are driving up and down the beach all the time, but they can't have their eyes everywhere. The red flag should be warning enough, but some tourists just don't care... Most of the time the people who don't have any experience are the ones who have these accidents. They are unable to calculate the risk and just believe 'Hey I'm on vacation and I wanna have a swim'. Even I leave the water sometimes when currents get too strong.
Thanks for stopping by Uwe. I'm happiest to see you posting btw :-)))