I won't baste any other way! I do thin down the glue a bit (roughly less than 1 part water to 3 parts glue) and drizzle it on in a zig zag fashion on the quilt bat and then smooth the back over it. Let it dry, flip it over and repeat for the front. You don't need glue everywhere anymore than you would pin everywhere. I don't iron it but let it dry several hours or overnight. I also do it in sections because I can only reach so far and it is easier to pull the fabric over the batting that way.
I have found that I need to wash the quilt with warm water to get the glue to dissolve. I usually wash in cold water but cold water doesn't dissolve the glue enough. I've never had any problem with it gumming up my machine or breaking needles. The biggest challenge is when I tie off threads and bury them in the bat if I have to go through a glued spot but even that is doable.