Just bought a new Sea Ray with 4.3L V-6, 190 HP I think its a two barrel. Has the Mercury Thunderbolt ignition. Alpha 1 outdrive. Manufacturer says 20 hour break in period. The first 10 hours must be above 1500RPM but do not stay at a constant speed/rpm for extended length of time? Does this mean I am supposed to just keep revving up and down for 10 hours? What about pullling skiers/Tubers? Is this Ok?<br /><br />What is the best procedure for break in to insure a long running engine and seat the rings?