[quote=Andinista]With 2 on board probably not necessary in theory, but I've heard stories where one of them is left behing the boat and the other cannot do anything to right the boat or stop it from drifting. I personally once tested the righting bag as a sea anchor and it doesn't reduce drifting speed signifincanty. So if prompt rescue is not evident in your area and you are concerned about safety, yes it's necessary.[/quote]
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