reduction methods of roostertail

[s.calhor]

HI
And thank you for your attention.we are an boat lovers family cosist of i ,my brothers(3),my uncles(2) and my father and grandfa that all of us have some expriences on boats.we have an 14 meter high speed craft with 2(650 hp) seatek engines and 2(trimax)propulsion system, every one on the one of the engines and (2) surface piercing propellers( super cavitation propellers)akind of astern lift propeller type.we have some problems with our boat in the high speed mode , the problem is the very high roostertail at the aft part of boat .if possible help us for reduction height and amount of the roostertail , with description of methods, affects of this method to the other boats parameters, person or company how applied this method for first time ,and etc.
Thanks and
Best regards
S.Calhor