PS: Note that it's VERY easy to call yourself a Christian, but very hard to be one. For all I know, I'm not even a true Christian!
Are you baptised? Do you believe in god? Then you're christian. The fact that you might go to hell or not is another story.
I've never been canoeing before, but I imagine there must be just a few simple heuristics you have to remember... Yes, don't fall out, and don't hit rocks.