You can NOT super glue softies. They will die.
There are so many ways to attach softies, there should be a book about it. Some use toothpics shoved in leathers and then they glue the toothpick to the rocks. Some use rubber bands to split rics, shrooms and the like or use them to keep them attached to rubble until they grow to attach.
Some use stocking net over a tub with cuttings inside sitting on rubble until they attach. Then they attach the rubble with glue to a larger rock.
It all depends on what works for you.