chine walk

i dont think his boat was running too flat. when it ran flat and the bow was in the water, it ran great, just couldnt get any more than 52-53mph at the same rpm. thats motor down and no tab. trim the motor with no or little tab, and the boat instantly lifts and picks up 3mph, and a few seconds later starts to walk. if you tab the boat flat and trim the motor to rev, it cavitates. this particular boat probably needs a 30", but surely that cant be the end all? i should have enough motor to run 60 with the tabs buried, but i really want to be able to stretch it out if conditions permit.