As you can see by the pic below, I have worked single crochet over the loose ends. You can see the ends sticking out. Once you have crocheted over the...
When you need to change color or add more yarn, I have found a great transition that is barely noticeable. On the last step of a stitch, loop new yarn on hook and bring through last step. Crochet your stitches over the two loose ends for a neat and sturdy junction.
Step 1: Step 1
As you are finishing the last step of a stitch, like below is the last step of a single crochet. The last two loops are on the hook.