I'm a little confused, because there shouldn't be any reason that you can't transfer external eels into the boat in that kind of weather, unless you're deliberately refraining from doing so in order to play more realistically.
OTOH, modding the boat so that its external torpedo storage becomes more space inside the boat for extra eels doesn't seem very realistic at all.
That said, there's no reason you shouldn't play the game in whatever way pleases you, but it seems to me that you'd be ending up with a net gain/loss of zero where realism is concerned. If it's going to be sacrificed one way or the other I think it would just be easier to haul those eels inside at sea regardless of the weather.
