I also iron my quilts after using the glue.
I table baste my quilts and after I have an area glued, I iron it to set it. I've only had one time where the glue came through the top fabric but I was using junky broadcloth to just practice quilting on... I'm definitely not going to use junky broadcloth again for anything... In fact, I still haven't done my practice piece with that junky broadcloth.
I just saw this link (thanks to someone here on the board) about using tape to make a thinner tip...
http://www.favecrafts.com/Techniques...ip-Glue-Bottle I'm going to give that a try the next time I baste a quilt which should be this week...