This happened to me. Log to the head, it was summer so it was getting crowded. But i got out before anyone else so when it happened i was alone. Got knocked out but luckily came to in a matter of seconds and was able to get myself to the beach. It was only 3-4ft. Ever since that i don't surf the same. Not hesitant as that is worse. But it's always in the back of my head. Small or big, it can happen. Iv found though that i got to let it go. It affected my surfing for awhile. I only recently learned to block those thoughts. Sorta. Got to be aware of what can happen but can't let it cripple you.