I had a 2000 21V and if you follow this weight combo, the wake will stay clean.
1. One 200 pound sack (Fly High side sacks) under each bow cushion in the front.
2. One 500 pound sack in each rear lock, but here is the key. Push the sacks as far forward under the rear seats as you can. About 1/2 of the sack will be sticking out into the rear storage.
For some reason this setup is the best for that boat. With those old hulls the boat doesn't like much weight in the back, so this keeps the weight more toward the middle. I played around with all types of setups and this was the best.