We moved into a house 3 1/2 years ago with this type of fencing. We love it. It is secured on one side to our property boundary fence and then runs free-form around our odd-shaped pool. It has sleeves that you put the poles in. The sleeves are set in the concrete deck/patio in our backyard. It all connects together and a child cannot get into it if it is locked. It is easy enough to remove for parties and such, but we only remove it when we have adult-only or well-supervised (hired lifeguards) parties. We do remove the gate section when we want the kids to have easy in/out access as they are getting older. It has the benefit of keeping some of the windblown debris out of the pool during storms and when the gardener is cutting grass etc.

Some advice: leave enough space around stairs and ends of pool to allow for adults to sit within the fencing in some areas and also for your pool cover reel etc. We haven't gotten a cover yet and the limited storage within the fencing is one of the reasons why.