Everything I have been told says they are hard to keep and get them to feed. That is on the other hand, in contrast to a pair my friend have who chomp at the food in the tank whilst it is flowing around.
I'd be interested to see what you come up with.
I had a fire goby that wasn't getting enough food so what I did was slowly pour the food in so that the pushy fish got their fill first, then I kept going for the goby. This worked well because there was minimal excess food moving around in the tank and everyone got fed.
Plus it was a good 'bonding time' for us all.