Central WI ski team boat. The other single they have/had (not sure if they still have it) was mine at one time, also an 84, it had a 225 Ficht on it. This one if I remember right had 150 Optimax on it.
This hydrodyne had the 225 on it. Then the mercury 150 got stolen off the other boat,so they took the motor off this boat and put it on the other one. Then they stored this boat in my shed for the last 4 years, so I bought it from them. This boat was painted in 2002. It was blue before. So this boat could have been yours .