I read an article years ago about a study in which mothers were randomised
to receive either a baby carrier, a sling or nothing.  Can't remember the
outcome measure but I am thinking that perhaps if you give mothers slings
(they don't have to be expensive - or you could teach them to make their
own) and teach them how to use them, they might find they like them better
than the buckets.
Some slings are no more than a strip of fabric ... the trick is tying it.
Cheers
Nina Berry 
Australia

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