From that picture it looks like the aircraft has hit bottom in a vertical position with just the tail sticking out. Should not be hard to recover it.
Was the life raft carried on board or dropped to them from the air?
As for that single person raft, the video showed both inflation with the user standing in a steady position, whilst it does not look hard to operate, it probably would have been better to demonstrate operating and getting on board swimming in a wave pool, as that's far more likely a scenario. Any training involved in boarding a raft should involve wave action, it more than doubles the difficulty of use.