As a kid I did a lot of boat building, mainly scale models that were not able to sail, although I did actual build a few boats that were, more or less, capable of sailing. I even once build a 10 feet boat, or shall I say raft. I accomplished this with a few friends and we had great fun sailing it on the local river. It was not really water proof and while one person was rowing, the others had to make sure that they removed the water quicker then it was entering our boat.
Then sadly one day we failed. I was rowing at the time, and we were in the middle of the river when it was clear we were sinking. I stopped rowing to assist with the hosing, but this only slowed down the process of sinking, it did not stop it. So I started to row again in on effort to reach dry land before we sank, thus avoiding having to swim to safety.
And guess what: We made it! Just before the boat really started to sink we managed to jump ashore. Here we watched as our pride and joy slowly sank to the bottom of the river. It was then that we realised we were at the wrong side of the river and this left us with a problem. We either had to walk to the nearest bridge, 10 kilometers upriver, so...