Maineiac
ArboristSite Lurker
Yes, that knot is correct. I would recommend using a clevis shackle to attach your block to the bowline, instead of just going around one loop. You can pick up a 3 ton shackle for around ten bucks and its well worth it.Is this how you tie your bowline for the pulley attachment? http://www.animatedknots.com/bowlinebight/index.php
Can you attach the block to just one of the loops? With the rigging block I'm using, I don't think there would be room for two loops in it.