When you bend the hook body, bend it half-way, then put the hook between the two halves and bend it the rest of the way in a vice. You will end up with something like this...
The real hook is a complex box with a quick release and shock absorbers. Ours isn't.
Again, this is a simple metal bending job. Only one bit of metal to bend, and that can be done in a vice. But a fair bit of filing...
Here is a cutting pattern for the hook pieces. You could always make it out of scrap balsa instead of metal, but then it wouldn't be strong enough to tow anything!...
And you end up with a set of parts. You can see the ink line for bending the hook body along. These all need filing to the correct shape before bending...
Like this...
Here are some paper cutouts from the PDF
Don't worry about the long strip - just a bit of the mast...
Finish off the hook and body as shown above. Then you can join them with epoxy or solder...
I chose to solder mine.
And this is where it goes on the boat. Job done!
You just sellotape them to the metal and then cut round.