"ballast" I believe is the word you're looking for JW. "Man-meat" would also be acceptable.

(edit)
We were crusin' at Tradewinds when the wind was up. Get Dan's bulk hanging off the transom and we could go like hell.

We really need to work on some stuff, but all in all we're a decent team, and sync up well. I think in the more moderate winds not requiring the hulk, I'll trap going downwind while helming. Should give us a nice middle gear.