Are you talking about using the glue for basting a quilt? Or for basting bindings, glue-basting seams, etc.? If for the latter, I bought the following glue tips at a quilt show and really like them:
http://www.purpledaisiesllc.com/Fine..._Glue_p/69.htm
You screw off the cap and screw on this tip. It makes a very fine line of glue and does not get clogged. Afterwards I screw the original cap back on the bottle and rinse and then soak the glue tip in a jar of water (as it is rather difficult to get all the glue out of the fine tip). I used to use just the Elmer's bottle on bindings and it worked, but I like this fine line of glue much better for bindings.