Nothing any easier or quicker and less unsightly than using a pin or needle to pin the shroom or frag in place. Glue may or may not work all the time, and I hate having to dissassemble my rock work to find a missing cheap shroom or high priced ric, that took leave of abscense because it got loose of the super glue. I hate looking at netting and such in a tank even if its only in there for a few days, where a needle or pin is pretty well invisible and works and puts it and keeps it right where you want it.