Related Clues:
- Theory of natural selection, for starters, is for heavyweights
- Boats that inflate
- Graduate goes to New York a lot
- Generous allowance to the Poles
- Heavyweights in abundance
- River awfully fast -- these may help
- Loads (sl.)
- Large number -- doesn't matter which, a large number
- Travels through a canyon, perhaps
- Travels through the Grand Canyon, say
- Balsa vessels
- A large number (of)
- 4,000 pounds, for two
- Finn's vessels
- Castaways' constructions