The 2 weeks are over and so I will "officially" put an end to this Paper Boat Challenge. However, I won't publish the correct solutions and comments which definitely are more than just a hint yet. So those of you who want to continue are invited to do so.
First of all: Thanks to all of you who participated in my little puzzle!
One thing became clear quite soon: The puzzle has a weak part. It is possible to find out the saying without solving the rest. Ute and Anne demonstrated that by telling me the saying but confessing they had no idea how to solve it the correct way. This was 4 days after the challenge started.
The first one who sent me a complete solution was Michael (12th Feb.). So you are the winner (congratulations!) and can decide if you give me a topic to write a post about or if you would like to publish something yourself.
Nadja had the right idea 2 days later. Congratulations as well! You weren't as much behind Michael as you feared. BTW, you asked me to write about "tuition fees" when you won the first Paper Boat Challenge. I'm working on that and I'll publish it soon.
Vanessa found out which sport I meant quite quickly. I guess once you'll have a closer look again, you'll find the complete solution very quickly.
I hope you liked my puzzle and you are already curious about the next Challenge (first Monday in March).