Plus-improved efficency leading to greater speed with out increasing hp or decreasing reliability
Plus-the ability to raise the x-dim
Plus-the boat behaves like a larger hull
Minus-full hydraulic steering is required
Minus-custom machining MAY be required
Minus-costs big $$
Minus-must fully derig the boat
The stern jack really isn't a comparable product. I believe the stern jack is limited to lower HP/speed applications that require alot of trim to run the best. The sternjack does not belong on a HP boat.