Ah, euhh, hm. well, err.... Never saw a shingle beach in the life of me, lack of experience, so sorry. The stone nature does explain the very bumpy touchdown, I wondered about that. Still, I can only hope my first for-real emergency landing will be as great as this one! Out of curiosity: how does one choose between sand and shingle/stone, in the given situation? Myself would prefer the sand, but only in avoidance of the unknown.