The pilots in CNS and BALPA have never believed that the Dacon Scoop represents valid rescue equipment. Some trials were done recently to justify it, but they were laughable since not carried out in representative conditions, then results extrapolated by someone with an outcome in mind.
The Dacon scoop is no doubt capable of fishing you out of the sea in rough conditions, only trouble is it will kill you doing so.
You can then argue that the probability of you ending up in the water is pretty low, the probability of that happening when its too rough for FRC is even lower, therefore the overall risk might be acceptable. Or you might think that its not acceptable when the alternative is to carry out the flight tomorrow.
HC