A few comments.
I've never seen a log acting like a torpedo in a lake. I'm not sure if I even heard of that happening. I sure am not worried about it.
Swimming rattle snakes. Yeah, that makes me nervous, have seen a couple, but from a distance.
And last, and most important, Good reminders on wearing a PFD at all times when on the water. I have a couple of the NRS Chinooks, and a couple inflatable. I generally wear an inflatable on lakes, and my Chinook on rivers I float. Good deal on the NRS Chinooks.
Whistle is a good idea too. I need to find mine.
Sam