That's true. My 1989 2001 is great for wakeboarding but for short line slalom the wake is hard and you get a lot of spray off of the boat. The wake gets better on the 90 model and really improves about 95.
Get an 84 or 85 mastercraft. I don't ski but my dad has for years. Great slalom wake, fiberglass stringers, better seating in the front, plus the stars and stripes is probably the best graphic scheme ever. My dad sold his a couple of years ago.