I have been knitting and hooking slings recently, here are the promised photos.
(For the detail enthousiasts, I can also give even more detailed photos if wanted.)
This is the crochet sling, worked from the fingerloop to the end of the release string. Sorry, I first have to learn the names of the stitches in English before I can give a 'how to make'.
This is the first knitted sling, made on the instructions Matthias gave, but gone slightly asymetric.
So I made the next sling with a bit more attention to detail, and in a heavier string.
And because I liked the asymetric sling, I made an other one, more asymetric.
Added
A one string sling, made just to show, I do not think I like this design, but it may work.
Talking about a deep pouch....
This crochet sling is made lengthwise, and I made it extra deep just to show it is posible.
Crochet a chain about as slong as you want to pouch to be, turn and crochet a second row, increasing the hight of the stitches till the middle of the pouch, making a few stitches into one there and decrease the height of the stitches at the same speed to the other end, turn and repeat, but here I made 2 stitches in the ones of the cluster below.
The next row I did increase and decrease the hight of the stitches, but not their number, then followed 2 rows where I also decreased the number of stitched, at the same rate as I has added them at first.
If you work neatly to the end of the row each time you will get a wide end where you want a narrow one, so one time work to the real end of the row, but the next turn just before the end of the row.
I added the strings at the end of the work, one just before the last row, hook till the end for the row and continue in chain stitch, go on till the string is long enough, make a double chain for the fingerloop, fould and connect to the start of the double chain and crochet a stitch in each chainstitch on the way back to the pouch.
Make sure to continue on the right side of the pouch, make one more row and make the other string, either as the first or using the double chain as I did here.
It is rather intuitive, like many experienced crocheters will understand.
Willeke