Gatling Groink Strategies
One very interesting strategy involving the Gatling Groinks in this area is to actually have a Gatling Groink guard your base and marble from opponents. First, find a Gatling Groink, preferably close to your base. Kill it, then have your pikmin start bringing it back to the onion. Right before they get it in the Onion, call them back. After a bit, the Groink will fully regenerate in your base. This is a good strategy if you don't play by getting yellow marbles, but remember the Groink will attack anyone's pikmin, so be careful when coming back to your base.