PineMartyn,
I don't have a picture, but hopefully this diagram will help. (not to scale)

Gray = tree straps
Blue = whoopie slings
Black circle = climbing ring
Red = amsteel soft shackle
Green = fixed length amsteel ridgeline with spliced loops (over-emphasized)
Black = amsteel continuous loops through climbing ring and hammock end channel



This setup actually mimics the lay of a hammock about 12" longer than it actually is, since effective length of the ridgeline (ridgeline plus soft shackles plus radius of climbing rings) is greater than if I had just attached the ridgeline to the continuous loops at the end channels.