The rock must be granite.
If a boater sounds five short blasts on a horn, it represents danger, or that the boater does not understand the approaching boat's intentions.
If the boater sees another boat approaching him, and he suspects that something fishy is going on, or he doesn't understand what the other boat is trying to do, he will sound five short blasts on his horn, in order to show that something is wrong.
I would say really bad! Because all of the lakes are important to Florida!
