I have not always heard favorable things about the fusible batting. I would test in on a very small project first to see how it stands up to what you want to do on a larger project.
I have been using Elmer's Washable School Glue for over a year now and found it to be as close to perfect as I can get it. There are a number of tutorials on this method. It is pretty easy to run a line of glue on one side press it and then turn over the quilt and repeat the process. When the quilt is done you wash your quilt and you are done. Just be sure you use the washable Elmer's School glue.