Potential new (used) boat owner here. 285 Albemarle Express with twin TAMD41P, jackshaft to 290DP drive and J7 wheels.
Factory performance of the exact setup BUT with A6 wheels is:
3,000 rpm. 27 kts
3,500 rpm. 30 kts
4,000 rpm. 34 kts
The boat Im looking at performed:
3,000 rpm. 18 kts...