I have used some props in 30 and 34" diameters on up to 20 hp motors ( ZDZ 160 and 210 to be specific)
the rated pitch on the best ones is 14". the 45 lb model on th 210 pulls vertically from a stop at 1/2 throttle and about 1/2 max rpm (well a bit more )
Watching the performance of the relatively narrow and almost symmetrical foil blades is an eye opener. the best ones - have extremely thick hub and a very pronounced twist right from the hub
These pull like a tractor even at low rpm ,yet provide excellent speed.
The material is one reason - all carbon fibre,
hollow for weight considerations and stiff as possible.
The "Clark Y" shape is really not used tho the backside is flatter than the face. These run in the 2000-6000rpm range
If you look at the blades (back a few posts) on my current selections of props for EFlite 15 thru 60 electric motors for 3d and some speed setups you see the extreme twist at base of many APC
These guys do have it figured out -based on results
A friend has some smaller ,excellent wooden props from Czech Republic which also work well The big props I mentioned are ZM which are also Czech prop designs
One thing we foundfor certain
the thin wooden props which flex when working, are for us-
worthless.
or worse