Oscar is on the money.
I used to own a 2002 21 V (identical hull and seats, different tower).
I used to put a 600 pound sack in the walkway and felt that the wake was outstanding. As you get more and more heavy in the rear, it gets just a little wash on it, that I think is mostly cosmetic and doesn't affect the performance.
This isn't the best pic, but this was actually with 400 in each locker as well. You can see a little washy lip just behind where the rider is. Where he leaves the wake is very nice.