This is my funniest story, but it's long
I did my rescue course in 1993 in Jeddah, Saudi Arabia. My instructor was regarded as one of the best in the area at the time and very thorough doing various scenarios over several weekends, and whilst several were done off "private hotel" beaches with facilities, most of our diving was done off "free beaches" along the massive Red Sea coastline of Saudi. Most of this involves walkouts over a shallow lagoon area to the reef and can vary as much as 100m to 1,000m depending in the location to the actual reef drop off.
So bearing in mind 1993, no cell phones, but some of the most awesome diving at the time
There was an area north of Jeddah (Obhur) that we frequently dived called "Pizza Hut Gap" this was a bit of free beach about 10m wide between a private villa and yes a Pizza Hut outlet (good for post diving snacks), and that is where this day's training session occurred.
My remit was to find a lost diver after surfacing with the instructor and some students. The DM H was the victim and someone I'd rescued before, who frequently tried to drown me on the surface during initial rescues. He was over 6ft tall and built like a brick outhouse.
Actually the water was clear enough from the surface that I spotted him very quickly after the instructor did a head count and announced a diver was missing. The students were all OW, and I elected to go down and retrieve the DM on my own.
The retrieval and bringing the DM to the surface was uneventful, and probably my third time doing this, so it went like clockwork. On the surface I instructed one of the OW students to get to shore and "pretend" phone the Emergency Services from the Pizza Hut, whilst with the help of the other students started to pull the DM to the shore and I started "pretend" CPR on the DM.
In the shallows when we could stand, we did a gear removal from the "victim" and one of the OW students was left with it so to avoid losing stuff, (actually we never retrieved the DM's weight belt for some reason). and floated the DM to the shore using only his and my BCDs (without tanks) as flotation devices and all the time I'm doing pretend CPR.
Then as we get to the shoreline there's this bunch of guys rush to meet us all talking in some language I don't understand (wasn't Arabic and I found out later they are Turkish), and they are trying to help the OW guys and me with the the DM and we get him on to the beach, while I'm doing this pretend CPR. The OW student who was sent to call help tells me that it has been done and they will be here soon.
The instructor meantime is standing back observing all of this and finally comes up to me and says "fine all done" so I stop and the DM sits up. The Turkish guys all jump back surprised and get really excited, shaking my hand and patting me on the back for bringing the DM back to life.
Due to language issues it wasn't really possible to tell them this was a practice and not real, but it did make me feel good, especially knowing that people will try to help in these situations despite the laws at the time in certain Middle East countries.
We did have a good laugh afterwards and the Instructor did say that the whole scenario was pretty much lifelike looking from a distance.