All you have to do is throw away at least one every round. As soon as the round starts and I am a T, I would throw one into the water pool in the middle of the map and then activate the lava trap. Or I would throw away one of the blocks in the nether, over the fence next to the portal. 9 is fine to be honest.

All you have to do is throw away at least one every round. As soon as the round starts and I am a T, I would throw one into the water pool in the middle of the map and then activate the lava trap. Or I would throw away one of the blocks in the nether, over the fence next to the portal. 9 is fine to be honest.