Set a backflip, but set your spin by leaning back and looking over your shoulder as your feet *just* come off the tramp. Now wrap your arms in to your body a bit to speed up the rotation. Wait for the flip and spin to come around a bit. Now you'll start to see the tramp and you can adjust your flip to land on your feet.
The most important part is the set (obviously). Make sure you taking it up, meaning getting all the air your bounce will give you, before you start flipping and spinning. This will avoid the rookie tramp move of flicking your feet over your head to flip, which makes you spin very fast, but very low altitude.
On snow, you'll just see your tails leave the jump if you've set it like I described.
Go big.
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Welcome back, mommy.