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Jerry -- I have access to exactly the same knowledge bases as you and everybody else here does. I may have more experience exploring these knowledge bases and I may be better able to find the useful information within these resources, but that is open for debate.

By far the best source of propeller knowledge with a particular boat is personal experience. I have a lot of personal experience propping boats, especially Boston Whalers. Short of that, it is best to look to the fellow who has gone through the same propping process. This is one way that Whaler Central is valuable. There are thousands of threads here where Whaler owners share their experience. That is, after all, the whole point of having these discussion areas. Many of these discussions involve propping our Whalers, so using the search feature here is one way to quickly focus on information from other Whaler owners who have propped their boats and otherwise experimented with propellers.

Whaler Central is not the only web site with an online discussion area that talks about propping boats. I have spent a lot of time over the years reading about propellers on many sites. Among my favorite sites that have good discussions of propellers are:

WhalerCentral
ContinuousWave
The Hull Truth
Scream & Fly
Offshore Only

...but there are many, many others too.

I know a great deal about propellers, especially about propping Boston Whalers because of my personal experience and experimentation but also because I have studied a great deal, reading everything I can find on these web sites. I have also read everything on every propeller manufacturer's web site, studied all their offerings, perused all their catalogs, read all of their "general rule of thumbs" and I have also written a great deal about propellers. There is nobody here on WhalerCentral that knows as much about propellers as I do. Not even close.

But I am not the only knowledgeable person out there. A few exceptionally knowledgable people who contribute to these online discussions that you should pay particular attention to include:

Ken Reeves, owner of Prop Gods, a mobile propeller testing service in Florida. Nobody I know of has more personal experience propping outboard powered boats than Ken. Ken is a good and generous guy I have talked with over the years. http://www.propgods.com/

Brett Anderson, owner of BBlades Professionals, a nationally respected propeller shop in Wisconsin. Brett worked for Mercury for many years including managing Mercury Racing's propeller lab. I know of nobody anywhere with more propeller knowledge than Brett Anderson. http://bblades.com/

Jeff Whidden, International Sales Manager for PowerTech Propellers. Jeff sometimes joins these online discussions. http://www.ptprop.com/

If you like to read technical books (as I do), I suggest you get a copy of Dave Gerr's Propeller Handbook, published by International Marine, and read it. Bear in mind it is not a book specific to outboard motors, in fact quite the opposite; most of the discussion is about propellers for displacement speed hulls, but there is still much useful information in there that can be applied to outboard motor propellers as well.