Can I get a ride on the boat?

Hint 1 of 5:

Yes, but everything costs money.

Hint 2 of 5:

Give Ben some money.

Hint 3 of 5:

You also need to power the boat.

Hint 4 of 5:

The motor looks like a treadwheel.

Hint 5 of 5:

Only animal power will work here.