Winter flying with retractable gear?

One instructor told
me that you want to tap the brakes before retracting the gear to dislodge
any slush or snow so that it doesn't freeze in the wheel well

I was taught to tap the brakes to stop the wheels from spinning before tucking
them away. (spinning tires bulge out a bit, or so I was told) I confess I've
never actually looked down (sometimes I fly a cutlass) to see how long it takes
them to stop on their own.

I'm not sure how tapping the brakes dislodges any snow. There's very little
shoe travel.

Jose

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