2010 150 E-TEC on a 2006 620T. 46 w/ 4 guys full gas, livewell, cooler and tackle. 4 blade 17 pitch cyclone and still not getting enought RPM’s @ WOT (~5200). Hole shot of ~3 seconds and trolls down to 1.8 for mid-summer cranks. Have seen 54 with a very light load, no fuel and 19 pitch 4 blade. I am not too concerned w/ top end as the torque to climb waves and trolling speeds are my main cares. I am looking to get into a 15 pitch 4 blade for correct RPM’s and an even slower trolling speed.