A couple of things you might want to consider, then...
A PT with the ROPS/Canopy provides a huge area clear of your head to mount mirrors both on the sides, like Sedgewood reports, and a rearview wide angle under the ROPS out in front, automotive style. You would rarely have to turn your head. I am considering these just for the convenience and safety factor, myself.
As for the side motion...
The easiest way to explain it would be to take two pencils and lay them on a table, tip to tip with the tips touching. Hold both pencils in the middle, one with each hand. While keeping the tips together, start rotating your left hand counter clockwise and your right hand clockwise. The tips represent the middle of the Power Trac, where it articulates and the erasers represent the front and rear of the tractor. The point where you are holding the pencils represent where the tires will be. You can then see how far the front and rear can swing, as well as the operator's seat, which would be right over the pencil tips.
Since the unit bends in the middle, if you are at a standstill and have the unit turned all the way to the right with an attachment on the front, say a bucket or the forks, and you then crank the wheel all the way to the left, the bucket or forks will move to the left 2-3 feet even though you have made no forward or reverse progress. Like a big, sweeping arc. Anything that is attached to the rear will do the same.
It is kind of neat. At full turn to the right, the right wheels are only about a foot apart and the left wheels are almost 3 feet apart. As you turn the wheel to the left, the right front tire rolls forward while the right rear tire rolls backward. The left front tire rolls backward while the left rear tire rolls forward. If you start turning the wheel the other way, the rotation of the wheels reverses. The distance between the front and rear tires is always changing as you turn.
I like to keep a cup of ice water on the fence post while I work. When I am thirsty, I drive over parallel to the fencepost, but cannot reach the cup. I crank the wheel all the way to one side and I end up a foot closer to it. I can reach over and get it. Very interesting feeling when operating for the first time. Takes a while to get use to it, but as you operate more, it becomes second nature. You almost wear the tractor, rather than sit on it. It becomes an extension of your arms and legs and off you go to do increadible amounts of work in a short amount of time. /forums/images/graemlins/smile.gif