I don't know anything about the particular unit, Yard King is considered a generic manufacturer whose name doesn't get associated with the top tier manufacturers (
<flameprotection> Ariens, Honda, Simplicity<
/flameprotection> ).
I have never used one but have read about them a fair amount.
Your questions about tracked units can be answered with "It Depends"
The first thing to realize about tracks is that they have very good traction ( its why people buy them). This means that if the transmission locks the two tracks together then it will be really hard to turn since the tracks don't slip as easily as wheels.
Some manufactures don't design their transmissions to make it easy to turn, others do.
Honda has one unit that uses electric motors to drive the tracks and a joystick to steer with, I would guess its practically impossible to turn with the power off but a dream when the power is on. As I understand it all of the other tracked Honda units have locked tracks. There have been a number of posting by Honda owners that tend to be quite positive and most members here seem to feel that the quality of the engines and blowers is top notch but very expensive.
Ariens has just come out with a line of tracked blowers, they are designed for the commercial market and have differentials that should make them relatively easy to turn with or without power. Note I said relatively, you are still pushing a heavy duty machine around, if you have no power then its still going to take some effort.
I haven't heard anything about other manufacturer's but it would be the top thing I would check for.
The point I'm making is that ease of turning and use varies from manufacturer to manufacturer so you need to kick the treads and try them out. A tracked unit is inherently heavier and "sticks to the ground" better than a wheeled unit that means it will be less maneuverable but be much better going up and down really steep icy hills.
Final thought on tracked units is a story a friend of mine told me years ago, I don't know if its true but it is good. His brother had a neighbour who decided to use a small D3 bull dozer to clear some snow, it was going great, the hill was still icy but all the snow was gone. He was just below the top of the hill, facing down when he decided to call it quits for the day and started to turn around. Once he was sideways to the slope of the hill he discovered that the tracks were now acting as skates and he was accelerating down the hill. He didn't hit anything that could be hurt, he was OK and the dozer was fine. He was a lot more careful turning around on ice from that point forward.
