Very intersting to debate carrying KEDs or similar on RIBs, but unless you're in a rescue/safety role then it's not in any way sensible to practice with it often enought to make it useful. It would, i would think, be of more value for normal comercial operators to simply thiunk about, and train their staff in, what to do with a back injury. Simple things like identifying areas of the deck where you can put someone, and making sure that area is clear of deck fittings, is useful, easy and free. I've been offered RIBs for charter as saftey boats for a long distance cat event that didn't have a 2m x 1m space on thier deck where someone could lie down.
Also, as already pointed out, increasing the awareness of the possibility of people getting traumatic spinal injury in this way is good. I'd be interested to see what the "thou shalt always sit down in a RIB" bunch at the RYA have to say about this.
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