Ok,here are a few pics. In all truthfulness, this idea came from somewhere else on the web... Just copied it...
Got the rope/cord at the Harrisburg Show years ago. It's some type of rated climbing cord. Figured that since I'm replacing a manufacturer's item, better to go way over the weight rating. Read somewhere that the Prussic knot needs to be smaller cord than the main line in order to "grab" the main line properly. Think I used 9mm for the main and 7mm for the Prussic. The Prussic was formed by creating a loop using the original "hook" and a Return Bend knot; then tied the Prussic onto the main line. Tied the main around a rung using a simple Overhand Loop. Best of Luck!!!