What size prop should I run on my 21 Redfisher with a Yamaha VMAX 250 HPDI?
o The Yamaha 25″ works well for all around. You should see top end around 66-68 with a light load and good hole shot. If your fishing is going to lean more towards live baiting and/or you need a shallow hole shot consider a PowerTech OFX 4 blade in 22 or 23″”. You’ll loose some top end but not much and your hole shot will be AWESOME. The negative is that your cruise rpms will be a little higher at a given speed costing you some fuel economy. The PowerTech VMX 25″ 3 blade pushes mine to 68-71 depending on load with a good hole shot. When shopping for props, be sure to get a bow-lifting prop. The 21RF hull is sensitive to weight in the bow as well, and once you get the bow up out of the water she’ll really go. Take your time getting used to the speed, it’s a rush. o Try a Mercury Revolution 4. I run the 21 Redfisher with the 250 HPDI. I own the PowerTech 25 VMX and a 23 OFX. I prefer everything about the Mercury Revolution 4. Hole shot is excellent with no blowout. 64 mph tournament load
