[DonRotolo]

The skyway wheels are not so bad, but the tread profile is a bit unconducive to traction. Try grinding the tread flat - the extra contact area of the flat, plus the roughness of the surface, might give you what you need. You can also use them as a base and put tread material on them for traction.
Pro: You have them, and can get more easily at the regional if you need them. They are light enough, and easy to mount with the hubs provided. They are strong.
Con: Narrow width means low traction. Only one size on hand.

To grind it evenly, put it onto an axle with bearings and allow it to turn slowly as you gring it with a belt (or other) sander, holding it almost 90 degrees to the motion of the sander. Take off a tiny bit each revolution, and use dozens to hundreds of revolutions.

Don