Originally Posted by
Prism99
Pin basting is used a lot when machine quilting, but for hand quilting it's actually better to thread baste. I would recommend thread basting in-between the pins you already have in the quilt to secure the layers better without interfering with the hoop.
That was going to be my recommendation. I would also take the pins out because the thread tends to get tangled up in the pins. Smooth out your back and rehoop leaving it slightly loose (not too tight and not too loose)