I just bought a house with a pool and although it has a fence around the backyard we don’t have a fence around the pool and we have a 3 year old (along with an 8 and 10 year old). I have been trying to figure out how to deal with the issue and installing a fence for 4 or 5k that we’ll be dying to remove as soon as we can is not what we want. Unfortunately the pool has no natural boundaries so the fence would need to cover like 200 feet around. I was thinking about an infrared perimeter alarm that we could set up to link around the whole pool. My kids are generally well behaved and listen well and it would be unlikely that the 3 year old be out there alone ever (her older sisters are like little moms and help watch out for her all the time). I was thinking we could teach the kids that they are never allowed to cross the invisible line unless grownups are there to disable the alarm. Has anyone tried this solution? I understand that an actual fence would be more secure and I am willing to do it if that’s really the only viable solution, but I’m thinking that if done right and monitored and enforced properly this could be a solution. Any thoughts or other ideas? Thanks in advance!