Ron ... you assume a lot
All I will add is the approach used when personally setting up my own boats.
Do this long enough we get a good idea what pipe lengths are on the long and short side ... so I will start long allowing engine to be calmer in power output and have a broad power band.
Next ... I will start the prop search for a prop the Hull likes for Handling, Launching, Milling Etc.
In this equation is also a prop the engine can pull well having again good launch, milling attributes etc.
* Once narrowed down to a few prop choices the hull & engine likes will start looking at maximizing performance of the engine and pipe.
Now I will start shortening up the pipe getting engine to run like a race engine should .... Set pipe so engine has a good on pipe hit in the upper midrange. Generally some of the more aggressive props that were contenders early on no long mill well due to loss's in torque with the shorter pipe setting, this not an issue because what I am looking for is MAXIMUM engine performance and peak RPM power.
Again ... generally the more conservative props from early testing seem to work best overall but in a lot of cases will be a tad slower.
Prop cupping and modifications is connecting the final pieces of the puzzle.
If the prop/props from original selection are having engine rev too high, don't have the speed other props may have had will start reworking the blades to increase engine load and increase efficiency.
( why we see so many guys now buying custom profile props )
Have found approaching the tuning game this way you end up with a far more consistent running boat ... Hull is happy because you have matched the prop design/profile to what works best ... And engine is performing at maximum output.
** Biggest mistake IMO most boaters make is choosing what they feel is the idea prop by listening to others or whatever reasons and then proceed in altering engines power band with a non optimized pipe setting just so they can run that prop [:@] You end up maybe running well but you have compromised handling and engine performance .....
In the end tho you very well may need to run that bigger prop on a slightly longer pipe setting to get hull all sorted out ... But make no mistake about it, those who understand and use all the tricks of tuning generally are the guys with the targets on there backs everyone else whats to beat [:@]
JMO nothing more ....