I don't know if this will help you, because I haven't marked a quilt and then glue basted, but I do glue baste all the time and find that you don't need a heavy dose of glue. It replaces pin basting, not spray basting. I drizzle mine on in a thin line in a kind of grid. I don't dilute and spray because it holds great just doing what I do. I guess you might test the process on a scrap and see how it goes? And please let us know how it all turns out!