Not always, if having a tachometer installed, report max wot rpm achieved as previously described test on calm water cond while combo is on plane and motor riding perpendicular to water level. Can go from there maximizing a less ptch prop to pull wot revs up higher and consequently achieving a much better hole shot. If without a tach impossible to maximize a prop. Adding spearfishing equipment for 4 is like adding an extra boater...
If hard to plane with 4, try 3, distribute deck weight evenly. Is your boat a center console, open boat, tiller driven and its length ? What's current prop pitch installed '
Happy Boating