To make a single crochet ripple stitch, begin by chaining the predetermined number of chains on the hook. From the hook and starting at the second chain, single crochet all the way down the chain. This completes the base row. At the end of the chain, chain one and turn before starting the ripple by alternating single crochet increases with decreases.
To start the ripple after the base row, do three single crochet stitches in the first space to create an increase. Follow this with a decrease by inserting the hook in the next chain, dropping a loop, going to the next stitch, then inserting, dropping a loop and going to the next stitch again. Finish the decrease by doing a yarn over, and then pull it through with the hook.
Create a heel after the decrease by doing three single crochet stitches in the next space. Create another increase by doing three more single crochets in the next available place, then doing three more single crotchets in the next space after that. At this point, you should see the ripple beginning to form.
Create another decrease in the same manner described above, and continue to alternate single crochet increases and decreases down the entire length of the chain. To finish, do a single crochet at the end of the chain.