Giovanni nodded and started to the right. "harmonize Sorareo" he placed his hand on his zanpakuto a he whispered the release command. His reatsu lulled to a low as he began concentrating. creating a big enough was what would take the most amount of time but the hollow he did sense was a ways away. as he gazed off the cliff he had to think of a way to set it up. if he used the cliff as a center point it could potentially leave him vulnerable. laying the net on the ground left aerial hollows unefected. and if he layed it laterally it was simply a matter of direction. a sphere would have to do. He would have to use the barrier from his shikai ability to create the sphere though and have the kido net surround. expanding the barrier as much as he planned on doing it would leave the barrier extremely weak to the point of literally just being for show. But the net would solidify after he hid it so it was just a matter of acting quick enough. 

He took a deepbreath and let it out "here we go Sorareo" he raised his blade, still in its scabbard up and held it horizontally. a Web like kido began to pour out of his hands and fell to the ground around him piling up quickly. this was the net. and it was already beginning to attract attention. Giovanni could sense Hollows begin to approach. he still had a moment but he realized that there would be enough time to hide the net. so he just had to bank on the fact that hollows were stupid. easy enough. "inhale Sorareo" his blade began glowing inside its sheath as the hollows approached his position. he could see a couple of them in the distance but could sens more beyond them