Just as a reminder, Columbia changed the Blue Dot some years ago, so its cover is now the same hardness as all their White Dots. The OLD Blue Dot, like mine, has a hardness the same as the new Ice Storm.
My Blue Dot is 28 years old, used to belong to my son when he bowled in junior leagues.
If you buy a Blue Dot from the past 5 years or so, it is the same as any of the White Dots.
The best method is to learn to throw any ball straight and you can save the extra space in your multi-ball bag for another condition specific ball.
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Never take a sleeping pill and a laxative on the same night.