Originally Posted by Martin Aislabie
With Kynance Cove it is best to get there as the tide is going out and as soon as you can get on the beach / sand start shooting. As the tide goes out follow it out to get access to the various other areas / coves that will open up. But bear in mind the tide will turn and have this time fixed in your mind but don't just rely on your watch - look at the sea all the time and keep the distance to your exit route in your mind. As soon (or preferably before) you notice the tide has turned start working your way back to an area that is safe. I would also not recommend you venture too far on your own and only shoot where you can see other people in case you should slip and be left injured and on your own with an incoming tide.
The above advice also holds good for any Cornish beach. Tide tables can be obtained at most news agents.