If you're using Garchomp C's Dragon Rush to snipe the bench, you are usually picking targets with 80HP or less. Burn the DCE and move on, because it netted you a prize. That's how Luxchomp decks do it.
But if you really want to try to retrieve those special energies, Manectric G can do it, and then use Bronzong G to move them to someone else.
If you're looking for something that can hit multiple Pokemon, Infernape 4 Split Bomb is a decent attack. Or maybe you want true spread like Abomasnow Snow Play.
That actually sounds like a pretty decent idea, losjackal.
I can work to get out a Dodrio UD to my bench for a lowered retreat cost. Bring out Garchomp C for the snipe and retreat next turn to Manectric G to gather energies. Manectric then has free retreat due to Dodrio, then keep recycling. Only problem I see with that is a mirror match, or with Bronzong G taking too much damage and knocking itself out. I'll need to refresh him with either SSU and replay Garchomp C, or run a Blissey or something.