Use of wheg?

[EricH]

I would be highly concerned about field damage. You've got 150 lbf applying to 4-8 points with very small contact area, and a high chance of sharp edges. This would also be known as "spending a lot of quality time with the inspectors" as you show that no, it won't damage the carpet.

A tri-wheel might be better, or maybe some elastic stretched around would do the trick.