what kind of can of worms did I open with this thread? 
Heres a quick and dirty answer to the question "Whats wrong with the roost?"..............it's too high

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That boat would probably hall ass and ride bitchen with the tail about 4'-5' off the water. but if your gonna start shootin it that high you need to stablize the boat, some boats will take that much and ride just perfect(slow but stable). Both of my boats will act like that in the mid RPM range with too much roost if i hit just a lil chop.