I think you may be missing my point. Yes, a dinghy is a great survival aid but you have to be able to get in it.
Probably not given I said:
I accept those who argue that getting in the raft is an issue.
Getting the life raft out of your average GA a/c
Have you seen the modern compact rafts. I doubt there is much problem getting the raft out with some planning other than with aircraft you wear.
You pull the cord.
Preventing it from blowing away once inflated
Mine has a lanyard on it.
50% of casulaties succumb within 10 to 15 mins from cold shock and swimming failure having never got in a life raft in a cold water scenario.
I would love to see your evidence for that assertion please. Do you have a link?
I would agree the only way to deal with every situation is to use jackets, a dry suite and a raft. However, my point is for most cost, comfort and practicality are all factors. From personal experience jackets and a raft work well for me.