Yarn over, insert hook into the stitch, yarn over, pull up a loop
Yarn over, pull through 2 loops
Repeat the same partial double crochet in the same stitch until you have 5 unfinished double crochets on the hook
Yarn over, insert hook into the same stitch, yarn over, pull up a loop
Yarn over, pull through 2 loops
Yarn over, pull through all loops on the hook
Chain 1 to secure the bobble if needed
Work the next stitch as instructed in your pattern