On 13 i have 27+23+45 (I know the first two can be improved). A tip for the last one: blow most of it away with the wind.
My total score is 1071, but I have several scores below optimal so it can go higher.
Lewellyn, on 7 i got 16+15+20. On the second one you can place the stick on the edge and connect the hook before it falls, the wind will keep it steady and the balls can't pass it.
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 "Imperfect Balance 2"){kind=icon}