"JG" wrote in message

Sling shot?

Haven't tried that, but have tried throwing - they're hard to catch and can
land in the water. Better to sail close-quarters and hand them over. (Note
to Neal: sailing within half a mile of another boat isn't all that scary
once you've done it. The trick is to follow the primary rule: don't hit the
other boats.)

Maybe a little bag in the middle of a throwing line... ...several could be
transferred at once...