Sand and leg support question

We have been slowly progressing on our pool set up. The landscapers have been and levelled the soil and placed sand on top. They say we are good to go. But the sand layer seems quite thick and so when we place the wood supports for the legs (we have pressure treated plywood) can I push these down into the sand so they are at the soil level or will that not be deep enough. Would the wood pieces end up being too low? Or will the weight of the pool flatten out the sand enough for them to...

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