i have no experience with goldentails, i keep a SFE
just stack the rocks so the eel can swim through them and hide in them. my SFE bumps into my anemone occasionaly, and backs up pretty quickly
thats about the extent of their relationship.. you can start out with a feeding stick, but i don't even use on of those, i just drop a krill in, and he can smell food in the tank within a few seconds. however, they have poor vision (SFE - i believe all eels do) and it may take them a while to find the food (it may swim right by it without seeing it) but will eventually track it down...whenever you have your hand in the tank just keep track of where the eel is.
Do Not Hand Feed If You Do Not Want To Be Bitten