I loved my Mac Cat DLX, but I found it difficult to get adequate end coverage with the BMBH. The JRB 11x10 rectangle tarp worked much better, though it is about 6 oz heavier if memory serves.
I can even close one end against the wind if I use Grip Clips to hiking poles(or trees/branches) at the spreader locations. I don't think I could do that with the Mac Cat DLX.
But another trick for the tarp ends is a smaller spreader bar on the foot end.
For I consider that the sufferings of this present time are not worthy to be compared with the glory that is to be revealed to us....that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now.