I had an aquabot I used at my last house. It had an inground vinyl liner pool, and did an excellent job keeping it clean. I left it with the pool for the new owners, and they love it too. It is made for virtually any type of surface. Our new house has a 30' round above ground, and I spent all last summer using a Hayward LadyBug, and I wasn't happy with it at all. So, I decided to get another self contained Aquabot. I didn't think about the rails around the top of the pool, as the unit will come up out of the water to scrub the waterline. In all the years I've been on this forum, I don't believe I've seen this question posted. Just wondering if anyone with an above ground pool has used one.