I have a Massdam rope puller ,with a capacity of 1500 Lbs. I use it with 1/2" 3 strand rope. What is the stongest knot for connecting two 100' pieces of 1/2" 3 strand together, for an extra long pull? I use this puller to aid in felling trees on my property. Is there a book I can purchase that illustrates rope knots and rigging?