I guess I'll need to start. I've asked multiple people where the optimum placement for the strut needs to be on a Spectra/Howard cruiser bottom. Every answer I got was, between 20 and 23 inches from the transom to the end of the barrel. So where did that number come from? The only person that ever gave me an answer to that was Bob Teague. His formula is to place the end of the barrel 1 inch per foot off the transom.
So unless somebody can give a better rule, let's say that it the rule for strut placement on cruisers. How about angle? What's the rule?

Cruisers:
Rule #1. Placement/position = 1" per ft from transom to barrel end.