Thanks for all the good imput. I have not seen that Petzl biner in person, but, since looking at these posts, now see from pictures, that is must be quite small.
The reason I ask this question is my Hennessy tree straps, now going on several years of use are getting cut through at the loop ends, where the hammock rope ties through. Not unexpected, and not a fault of the quality by any means. But now I just love those woopies since I have started using them, over the origonal HH rope.
Never more than one man left behind, so far !