By sheer coinsedence I was looking at the Rossboxing site and found a post by a member called Dazzle. I thought it would be well served here.
"Double End Ball - Any Tips on Use & Set Up?
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After having this post sit here unanswered for a few days I asked Alan Kahn (author of the Speedbag Bible) via allexperts.com for his advice on this subject. As my post has received 30 viewings so far but no replies I am assuming that people have been checking it out as it's also an area that they might be interested in. To this end, I've copied Alan's comments and include them with this post to assist other users - hope this helps and thanks again Alan:
"As for the double end Bag:
You asked: "What is it used for and how should you use it?"
It is used for punching moving, swaying target that you can "slip", but letting it come close to your face or head and barely move to let it just miss you. It is different from the speed bag in that a speed bag has a fixed arc of movement. No matter how hard you hit it, it will rebound the same distance from the swivel. But the double end bag will have a much larger and faster range of swing due to the elasticity of the bungee cords. It also reacts more realistically to a punch direction, and can come out you from all angles. the speed bag is more fixed in its range of motion. It is more of a light jab, multiple jab, combination bag than the speed bag, without the hard feel as the heavy bag.
You asked: "How tightly should it be strung up (how much should it move around after it's been hit) and at what level should the ball be?"
String it tight enough to stretch any loose play out of the bands. Once all the slack is out, you can use the distance you want it to move as a guide. the tighter the bands, the more tension, the smaller the arc of movement. But tight bands can also make it fling back pretty fast if you really smack it. As far as the level, Most people prefer it from shoulder to head high, depending on the level you want to work on your punching. In fact, there is a "double" double end bag set up that allows for two ball targets on the same bungee, allowing you to punch at two targets at two heights. see one here at Ringside.com
www.ringside.com/store/prodinf...10&mitem=12
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Here is a short post about A video on double end bag training from Amazon.com
http://www.amazon.com/exec/obidos/tg...de.heading.001
Hitting a Double-End Striking Bag
There is an entirely different rhythm to hitting the double-end bag than any other punching bag. Heavy bags don't punch back?double-end bags do! You learn to bob and weave, slip and duck, keep your hands up and move your head. When you strike the double-end bag, it will react by moving quickly away, then rebound back right at you. You can either wear your boxing gloves, striking mitts or hand wraps when hitting the double-end striking bag. Boxing gloves give a larger contact surface and initially may be a better choice. Work towards using just hand wraps or striking mitts.
Step 1
Address the bag in your boxing stance, hands up and get ready to move. Stay light on your feet, the weight centered more towards the front of the feet.
Step 2
Strike the bag and slip out of the way of the rebound. You do not have to strike with a lot of power, work on technique. Try to strike in the center of the bag at first, making the bag move directly back and straight at you. Move out of the way and then strike the bag again. Practice your slips, add footwork, move in and out, circle the bag, and mix up the punches.
To see firsthand how this is done, check out 'Video - i-box: Fitness Boxing Fundamentals VHS'.
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I don't know if this is a good video or not, for I haven't seen it. But I have found very few training programs for it.
You said: "I'm planning on hooking it to my heavy bag bracket and simply attaching a weight to the floor to keep it anchored"
That should work as long as the floor weight doesn't creep around and ruin the bounce.
Good luck with it all and let me know how it goes.
sincerely,
Alan Kahn
author, The Speed bag Bible "