Like sumwun said, STAB Z-Crystals like Buginium and Waterium will be helpful in taking down difficult opponents, (Champion, E4.)
You could also give it a different kind of attack boosting item like Insect Plate, Splash Plate, Mystic Water, Life Orb, etc. I wouldn't recommend Life Orb because of Golispod's need to conserve HP.
The best, (and in my opinion the coolest option,) is to give it a Sitrus Berry. This makes it regain HP before EE activates, allowing you to stay in play longer. In competitive, this might not be the best option, but on an in game team, switching is annoying and unnecessary.
Hope I could help!