My FantaSea has a 5.5' hopper deep end. The original installation was beautiful and loved it. Then, 10 days later the liner failed at a seam and washed the sand out. The liner company agreed to replace the liner AND install it. They got a local installer who did an ATROCIOUS job--seems they didn't know how to do a sand base, only vermiculite. The liner is holding, but it has the worst set of foot prints and wrinkles you ever saw. But the deep end is fine. It's about 11x14, then ramps up on all 4 sides to the 4' depth. I've been torn now between wanting the liner to fail so I can FINALLY get it re-installed correctly, and not wanting to mess with replacing the liner for as many years as I can!

We had thought about the 7.5' deep end but Island Pools strongly recommended against it and we figured if they are that much bigger on the 5.5', maybe go with their advice. We haven't regretted it.