Posts: 2384
Location: On the X that marks the mucky spot | Not always Jo. B&W Boat Mag did a test with a 620 and the stock 3 blade had a better hole shot then the 6 4 blades they tried.
For best performance, your motor should be turning around 3500-4000 RPM's at take-off. The new merc props (Tempest and Trophy) have plugs that you can interchange to get the best hole-shot. Raising your motor will help your topend, but do nothing if not hurt your low-end. When your motor is raised, you have more of a chance of blow-out. A hydrolic jackplate is the way to go if you want to spend the dough. Keep it low at take-off and raise it as you go. If you do decide to raise it, make sure you have a water pressure gauge so you don't starve it for water.
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