I checked into this. BoatUS rents the following epirb:
http://www.westmarine.com/webapp/wc...&catalogId=10001&productId=23973This model is the type that when exposed to water self-activiates. It wieghs about 4-5lbs as far as I can tell. BoatUS ships it in a large waterproof briefcase. This unit has no internal GPS. Also the unit is registered under BoatUS so they have to call BoatUS first to get the contact information.
I don't think this is what I'm looking for. It looks like the best bet is the ACR aquafix with internal GPS. However I've not seen any independent tests of this product. I'm assuming it would work well based on the tests of the other ACR product line.
$600 is a lot to spend per person but I'm thinking if I'm in the middle of the ocean I might decide it was the best $600 I ever spent.
The Aquafix model claims to be about 12oz.
Mike Hill
www.stlouiscats.com 
