Hey all. Was just trying to pick some brains here. I have a '06 247 genesis with a 496 HO runnin I belive a 4 blade 24p prop. I have 30 hours on the motor and I have gotten the boat up to 78mph on the speedo.( save it I know this is off because a regular speedo isn't accurate.) I was at 75mph before at about 20hrs. Is this thing gonna wake up even more? Oh by the way the way I am hitting 4800 rpm trimmed out. Oh the other question. If I changed out props what would give me better top speed? and what does labbing do. and what does it mean? thanks in advance. One more question. If Merc says that the optimal rpm range is 4600 to 5000 does that mean that I cannot exceed this range?.....thanks again.