At the top it will make it tougher but the bottom should be addressed because thats usually where it comes appart.
I was first thinking of the 2nd bag pic with tappered ends.
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As far as the bottom goes, what if it was sewn closed and THEN turn the tube inside out to help protect the bottom stitching?
You could also run a 2nd stich row on the bottom above the first so if one row fails, you still have a back up row that will keep the shot from falling out!
I had an idea for the web peice that forms a loop for the ring...
What about running this loop webbing through the bag and have it sewn (conected) to the bottom. It will already be folded but only half way so one end is in the middle of the bag sewn to itself forming a loop at top and the other end is sewn (attached) to the bottom.
This way, if & when it gets stuck, your not only pulling the bag at the ring thats sewn to the top...your ALSO pulling the bag from the bottom as well!
It will creat a much stronger bag (top & bottom). While pulling hard, likely the only thing that will break will be your line!
Your thoughts,
HC
I get this complaint at Wesspur at least once a week - "why can't you make a throw weight that won't bust open when it hits the concrete?" The answer is, we can - out of solid steel. But if it has to be a fabric bag containing steel or lead shot, there is just no way to make them indestructible. I've experimented with different stitching patterns (across top & bottom instead of up & down the sides, double/triple stitched seams), different material (everything from Cordura to Sea Tarp), and even different threads (the thicker the gauge, the better). The better designs last longer, but all it takes is a single thin spot in the thread or a stitch 1/32" off to create a weakness that will cause it to break when it hits the ground. And it only takes 1 broken weight for somebody to decide that since your product broke when it fell from 160' onto pavement it must be cheap Chinese-made crap.
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