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you can just wedge it in between 2 rocks. it will stick on it's own in a few days. with the super glue you'll have to do it fast, because it will slime up very quickly and then you won't be able to get it to stick (i'm saying this for the readers, since you've just been through this). some rubber band it to a rock, some use some sort of netting to hold it down against a rock.