They were big back in the day. Search for 'hybrid pool' and you'll see alot of others. When they start to fail, they easiest permanent fix is to drop a liner in and have a vinyl pool because they fail from leaking at the seams, while the structural integrity remains great
I've seen that mentioned before.
The story I've been told (pool was put in mid 70's) was it began as a normal soft bottom liner pool. They had problems with ground water floating the liner, so they say they tried to combat that by putting concrete on the bottom and having someone "blow fiberglass in with a gun (?)" On the walls.
Then he says for some reason later they "went back with a liner".
It confuses me when he says "went back with a liner". When I look at what's there under the liner, I can't fathom using it with no liner. If for nothing else because it's terribly ugly, and the family it belonged to was all about appearances. But, apparently somehow they were using it that way with no liner nonetheless.
My wife's uncle was telling me this, and it's possible he has some parts of the story wrong. He was very young when all this was happening.
Anyway I think this has left me with a very nice IGP with a lot of structural integrity. Not sure what it was that worked but there haven't been any ground water issues floating the liner since I can remember.
When I was in middle school I met my now wife and started coming over and playing in this pool back then.
I know at least for a good 25 years there haven't been problems with that, thank goodness!
Whenever you have a say in it, you'll want a minimum of a foot to 18 inches of water in the shallow end to keep the liner in place.