They're not worth it!

Let's do the math. Let's name the points A B C D, where A and D are separated by 6 feef, and all other point pairs by 6 feet. There fore, ABC and BCD are equilateral triangles of side length 6 feet. This leaves two possibilities for the distance between A and D: either they are the same point, or their distance is twice the height of an equilateral triangle with 6 feet side. Since A and D are clearly distinct, we'll go with the latter. That makes the distance AD to be equal to 6 feet times the square root of three, giving a value of sqrt(3) feet for one feef.

1 feef is 12 finches