Growing up on the farm Dad had a free-ranging flock of one rooster, 25 to 30 hens, and had different groups of chicks growing up. They did not stay in one flock, they really spread out. The only consistent source of water was the farm pond where the cattle and horses also drank. They never died of thirst, even in our ridiculous heat waves. As long as they know where it is I'd expect your 11-week-old chicks to return for water when they need it.
I don't do it that way. I have a multigenerational flock so I have several feed and water stations scattered so the older ones cannot bully the younger away from the food or water. To me it is not a big burden to regularly change water at least every other day to avoid mosquitoes from breeding in those waterers. That water needs to stay clean anyway. I have a water source at the coop. I don't know how much it would bother you to carry water, for some people that would be a huge burden. But if you make a routine of it you are not likely to forget. It may just take you a few days to set that routine.