Bryce, i had an 89 sport for many hours, around 1600 +, the last few years i was running 4 sacks plus 200 pounds in the ski locker and some random lead bricks for balancing the wake. i didn't always fill them all the way up depending upon how many riders i had. 4 sacks makes the wake huge and gnarly,with a strait up lip that will boot you. especially in calm/smooth water.
4 full sacks does make the sport a bit of a low rider, got to really watch the nose of the boat on the turn arounds, i def took a few over the bow. motor and tranny were strong and running great when i sold it. the next boat i got had tranny problems you could feel the tranny slipping, i NEVER felt any thing like that in the sport. hope that helps.