not an expert, but i find myself constantly adjusting the weight on my vac (not a barracude but simpler)..we get breezes in the summer on and off that move the water in the pool and my cleaner is definitely influenced by them..i usually watch a couple of passes and see if it's liking the wall too much..if it is , i move the float around on the hose. 3ft away from the head is the recommended starting point on mine and it varies from there to get it to "behave"