Mal,
Some use the type of sock your wear on your feet..
I personally like to use Ladies Knee High Stockings.. They work best for me.
I add the CYA to the stocking, and use neck of the stocking to hang it in front of an operating pool return.
I leave it that way for an hour and then come back and squeeze it. I do this once or twice and the CYA will be mixed with the pool water in a few hours.
Thanks,
Jim R.