I have a drop in bobbin and have never had any problems. My machine is a simple Brother machine...I drop the feed dogs...set my tension to about 7...almost the max...and pull up the bobbin thread before I start stitching. I also set my stitch length as low as it will go...which is only .2 on my machine. I don't even need to check the back of my quilts anymore because doing these few things always work. Once I started pulling up the threads and tightening the top tension, all my eyelashes and pulling on the back went away. Works no matter how fast or how slow I go. I have never touched my bobbin tension.
Oh, and I use a size 14 needle. Since I sew kind of fast, it helps keep up.
Good Luck! I hope you get it figured out!