Many rope tosses fail due to tangling of rope inside the throw bag. This always happens when you neatly coil rope outside the bag and then stuff. The proper way to stuff a bag is inch by inch directly in the bag and fill from the bottom to the top of the bag. A great way to do this is to drape the long end of the rope over your shoulder and use both hands - alternating - to draw the rope into the bag. One word of caution though, many PFDs these days simply have a shoulder strap and ropes have rough surfaces. You may need to wear a shirt to use this technique to avoid skin irritation. For a great demonstration of this technique and a new throw bag design, check out the following video: Stuffing a Throw Bag.