Get a tow strap or a tree saver and wrap it around the FEL. Then attach the pulley with a D-Ring shackle. With a proper snatch block, this rig should be good for thousands of pounds. Your FEL will hit its limit far before the rigging. With your present "pulley" and winch attachment, I would not try to lift more than 100lbs. Even that might be a stretch. Also, I can't see all of the bolts that are holding the winch in place, but it doesn't look very secure. At the very least, upgrade your hardware to grade 5 bolts. Winch very slowly and check things periodically. Good luck!