Move that Sled!:
Don't just stay in one place, move around to get a better angle to haul up the best stuff. Click to the left or right of your sled to move.
Ice Ice Baby:
Some valuable items are encased in ice, you'll have to hit them twice to haul 'em up.
The Snowglobe powerup allows you to freeze moving creatures on the field for 15 seconds. Use it wisely!