I originally built the pool myself so I know how they are done. Never tried concrete in one but have experience pouring decks, driveways, etc. I'm going to replace my entire deck around my pool at the same so I think I will give it a try and update the forum with pictures while I'm doing it and after I'm done. I think alot of people would like to add something like this to thier vinyl pool but it hasn't been tried or hasn't been talked about on the internet very much if it has. Thanks for the help and for you last question cost? I'm sure the it would be expensive to convert the whole pool to concrete.