vincent p. norris wrote in
:

... One of his tips was to always wear a whistle on your lanyard
as when the river suddenly rises you may be excited if you are trapped
by rising water, but that does not mean your voice will be heard over
the raoar of an outboard motor. They will know you are there if you
use a whistle.

Damn good idea, Big Dale, but forget that kid's Boy Scout whistle.
Just recently I read somewhere about a super-loud survival whistle. I
googled it and found :

http://www.nitro-pak.com/product_inf...roducts_id/134

I can't vouch for it, but it might be worth looking into. (Blowing
into?)

vince

I'm a huge fan of whistles. When I teach beginners about gear, a whistle
is always on the list. I like to think that if enough of those people I
teach pass this along to new beginners, eventually somebody will be able to
get themselves out of a nasty situation because I told someone to carry a
whistle.

Scott