Some of you read my "Experiment" thread.  I generally carry two slings, one long (5 1/2 ft) and one relatively short. (2 1/2 ft)  I wanted to create an in between sling so I could carry just one.  Last night I made Kathy, which is a shorter version of Linda, my experiment sling.  Linda is 5 1/2 ft and Kathy is roughly 3 ft.  
    As you can see, the pouch on both is just a single strand.  I've been totally surprised at how effective this type of sling is.  This morning I took Kathy out for the first time.  She was short enough for me to easily chuck rocks Apache style.  I was able to twirl her rather easily also.  I was getting average shots of about 90 yards with some of the better ones at 120 yards using a wide range of rock sizes.  
   Most of the shots had that whistle then loud snap sound but the icing on the cake was that three times she cracked loudly, like a gun shot.  I'd only ever achieved this effect once before with a slightly shorter sisal sling a few months ago. (Selena)  
    I wish I could convince everyone here to try a sling like this.  They're easy to make, hold a variety of sizes of rocks, are adaptable for many different styles of slinging, and can be made to explode like a gun shot.  At least for the time being this will be the Rat Man Sling.
    To make one simply make an Appu-sling per Malik Lund's tutorial here out of a good stout cotton cord.  Make the pouch about four or five inches long.  Then, using a piece of the same kind of cord weave the pouch through the three strands.  Make certain that you weave the pouch as tightly as possible.  I use a screw driver to jam through the last few weaves.  Whip both ends of the pouch to secure the loose tags.  Tie what ever kind of finger loop knot you like.. I use a simple slip knot, then whip it to hold it in place.  I use West Coutry Whipping, buy any style will work, of course.  It takes about a half an hour to make one.   I temporarily taped the whipping down until we can find where the glue gun is lost in this debacle of a livingroom.  
    Again, I'd love to be able to convince everyone to try this type of sling.  You'll only have to invest an half an hour and you'll probably really like it.  
    Attached is a picture of Kathy.
 
Rat Man
     

OK. You have convinced me. It's very nice and simple. Maybe this weekend I'll do Catalina, the transoceanic version of Kathy.

Next I'm going to attempt this sort of concept in a braided Rockman style sling.  I'm not exactly sure how to do this, but I'd like to check out the effect of a soft, supple, thin braided jute retention and release cord with the heavy cotton single strand pouch.  Perhaps not separating the three sets of two strings into the two sets of three to make the pouch, but instead leaving them the three sets of two and weaving them across that way would work.  I'll try it and report back.

Sometimes a roll of cotton or something like cotton will turn up in the dollar store, kid.  
   I did it... I made a Rockman sling with a Rat Man pouch.  I don't want to photograph it yet because it's a bit tight.  With it in mind that it'll loosen up during use I braided it and wove it very tight, so it'll appear a tiny bit misshapen until I use it later this afternoon when the Huskies wake up for their walk.  Wow, this is weird... I never measure anything, just eyeball it up.  The new sling is exactly the same length as Kathy.  Hopefully that'll help my accuracy.  I'm very curious as to how this new guy will perform.... more on that later today.

We Spanish say “What is promised is debt”: Here is Catalina. I do not know if she will work fine, but, certainly, she is pretty.

I can recommend PJ's five-strand. I usually prefer the natural materials for my slings, but I was looking for something for every weather, heavy duty and easy to make, so I stumbled over the 5-s-tutorial. Two pieces of cordage, 15-20 minutes, and that's it. Great sling!

Good job Rat man. Your own design is bound to be the most efective for you.

  Actually, they're not all ladies.  I also have a Junior, Craig, Greg, and Karl.   If a sling is particularly thin I'll name her after a thin woman I know, if she's long I'll use a tall girl's name, a very good looking sling gets a good looking woman's name, or if it's got a big pouch I'll name her after a girl with a big... er... neck.   If it's stupid looking I'll name him after a stupid guy I may have known, etc..  I know it's weird, but you asked.
   OK, I'm just finishing up my first peacefuljeffrey sling.  Hopefully you'll recognize it as being made from your design.  The pouch is sort of canoe-like, but that may not be a bad thing as long as I can find canoe shaped ammo.  When finishing the pouch the outer strands were longer than the inner ones, so I had to be a bit creative but it's symmetrical so it doesn't look like a mistake.  I can't take a picture until tomorrow when I buy new batteries or find the missing ones for the camera.  
    Your prediction about me preferring this design may come true.  My original purpose for designing the Rat Man sling was to make one with a heavy pouch to launch small projectiles.  I even considered running a line of lead down the back of the pouch for extra weight.  The pouch of your sling is noticeably heavier.  Maybe I made it too big.  I'll know tomorrow.  
   Actually, the canoe shaped pouch may be an advantage.  If it flys into the lake it'll probably float.  
   Thanks again for the suggestion.