You just have to mount it properly at the outset. If you run your prop shaft dead even with the keel you mount the Porta mid stroke with that. Then you get all that extra lift. Now if you are still working through various set up issues I totally agree with you if you are trying to squeeze out...
My .02 is if you are going to buy one of the new Merc motors shopping on price is WAY down on my priority list. Draw a radius around you for Merc dealers, then research who has the top credentials for outboard techs. Buy the motor from that dealer so that you have someone who is is vested is...
Is the 888 boat the one that had the Cosworth Merc hanging on it when you bought it? I looked at that one back a ways. There is some detailed testing going on right now with the new Merc V8 300R motor and feedback is good. Hang a 300R on that Vaughn!