More Rows of Checkers

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1. Can you place 10 checkers on the hexagon such that there are 2 checkers in each row in each of the three primary directions?
2. Can you place 9 black and 9 white checkers on the hexagon (leaving only one location empty) such that no more than 2 checkers of the same color are in any row in each of the three primary directions? Or can you prove it cannot be done? (If it can't be done, what is the largest number of checkers you can place under these conditions?)

Source: Original, though I wouldn't be surprised to hear of another source.