Golf hole water extraction tool - GIF

Golf hole water extraction tool.

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Previously:

https://www.homemadetools.net/forum/...318#post173080
https://www.homemadetools.net/forum/...463#post158559
https://www.homemadetools.net/forum/...115#post125913
https://www.homemadetools.net/forum/...636#post132785

I am not a golfer, but did not realize the hole was that deep.

Presumably the hole has a liner of some sort. Why isn't the bottom of the liner perforated with (smaller than a golf ball) holes so the water can drain away naturally?