While I was taking the photos I always put my phone in burst mode. This helped me capture the certain moments of a photo that I want. My tip is try to keep the camera very still and time the photo. I would like to photograph a swimmer, about to appear from the surface of the water.
Here is my stacked photo:
Here is the link to my action photos folder, called, “motion shots”: https://drive.google.com/open?id=1-bLg8blIDUoElb0Sj5EAW-vYCKViBmFg
I put a setting on my phone so that every time I take a picture it captures several shots at the same time. One main piece of advice I have is to always use the burst option. I would love to photograph a wave crashing onto the shore.